Danfoss ERC 112 Electronic Refrigeration Controller User Guide

The ERC 112 is an electronic refrigeration controller with an
LED display designed for bottle coolers and commercial
fridges/freezers. It offers easy installation and high quality with
flexibility.

Display: LED display available in red or blue
Buttons: Upper left button can be ECO or Defrost, lower left
button can be Light, Stand by, or Super chill

Usage Instructions

Mounting and Installation

The ERC 112 is designed for front panel mounting. Ensure the
controller is securely placed using clips provided on the sides.
Front frame can be used for additional security during front
mounting.

Sensors

S1: Temperature sensor for cabinet
S2: Temperature sensor for defrost
S3: Temperature sensor for condenser, light sensor, or motion
sensor
Door signal or motion sensor available

Password Protection

Use KoolProg Software to set access levels (1, 2, 3) with
passwords. Level 1 for shop access, level 2 for technicians, and
level 3 for OEMs. Passwords can be changed within your access
level.

FAQs

How do I change the password on the ERC 112?

To change the password, use the KoolProg Software within your
access level. Follow the software instructions to update the
password for the desired level.

Can the ERC 112 be used for glass door merchandisers?

Yes, the ERC 112 is suitable for glass door merchandisers as
well as other refrigeration appliances.

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User Guide
Electronic Refrigeration Controller ERC 112
This user guide is intended to be used by OEMs for the purpose of programming ERC 112. It may also be useful for technicians. However, it is not intended as a user guide for end users.
www.danfoss.com/erc

User Guide | ERC 112 Refrigeration Controller

Introduction
Application

Temperature control for refrigeration appliances. Front panel mounting.

Advantages

The latest generation CPU, plenty of memory and high-end electronic components allow for a uniquely versatile software. Three separate password-protected user levels can be used to control more than 300 different parameters to fit all individual requirements.

Approvals

R290/R600a end-use applications employing in accordance to EN/IEC 60335-2-24, annex CC and EN/IEC 60335-2-89, annex BB; Glow wire according to EN/IEC 60335-1;
IEC/EN 60730
UL60730
NSF
CQC EAC Ukraine

Password protected

The access level can be set separately for each parameter using KoolProg KoolProg Software. There are three levels of access 1, 2, 3: – level 1 is for shop access; – level 2 for technicians; – level 3 for OEMs. The access levels cannot be set using the buttons. Passwords for the different levels can however be altered for the level of access you have, e.g. a level 2 user can change the password for level 1 and level 2 but not level 3.

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Typical application

Glass Door Merchandiser No-frost freezer/sub-zero cooler

S3, S4 are optional

Gastro No-frost freezer/Cooler

S2, S3, S4 are optional S3, S4 are optional

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User Guide | ERC 112 Refrigeration Controller
Product overview
Display

Buttons Clips

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The ERC 112 is an electronic refrigeration controller with an LED display especially developed for bottle coolers and commercial fridges and freezers. It is particularly suited for OEM customers where time, easy and reliable installation and high quality need to go hand in hand with flexibility. The display can be ordered in red or blue. The controller is available with the upper left button as “ECO” or “Defrost”. The lower left-button can be supplied with “Light”, “Stand by” or “Super chill”.
Are used to secure the controller in place in the case of rear mounting. They are not used with front mounting. There are two identical clips, one placed on either side of the controller.

Front frame
“S1” Temperature sensor for cabinet
“S2” Temperature sensor for defrost
“S3” Temperature sensor for condenser, light sensor or Motion sensor
“S4” Temperature sensor Pt 1000 ohm/0°C or door signal
“di” Door signal or Motion sensor

Controller without front frame

Front frame

The front frame provides a proper finish but can also be used to secure the controller in place when using front mounting. In this case, clamps are not required. Contact Danfoss for details.

Control temperature sensor There are different lengths.
Defrost temperature sensor Should be mounted on the evaporator.
Condenser temperature sensor Should be mounted on the condenser.
Light sensor Is optional and is used to measure the level of ambient light around the cabinet so that night and day “Economy”, “Normal” modes of operation can automatically be set, as well as the brightness of the display.
Motion sensor Should be mounted on the cabinet front.
Door sensor connector cable Is optional and is a connector and cable with spade terminals compatible with door contacts used in refrigeration applications.
The function of an input can be reprogrammed, but the connector can not be moved. The connector is designed to only one location. “S1” to “S1”, “S2” to “S2″, etc.

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Quick programming
Software for PC
KoolKey (EKA200)

KoolProg Software from Danfoss for programming the ERC-controller via a PC rather than with the front panel buttons.
https://www.danfoss.com/en/service-andsupport/downloads/dcs/koolprog/
KoolKey (EKA 200) KoolKey is a smart device that acts as a Gateway to connect ERC controller to PC software”KoolProg” as well as a Programming key for fast programming.
Refer to the KoolKey installation guide for detailed instructions.

Mass programming Key (EKA 201)

Standard Micro-USB cable

KoolKey

di
Interface cable

Controller
di

KoolKey

Interface cable

Controller
di

EKA 201

Interface cable

Danfoss 80G8548

Danfoss 80G8547

Danfoss 80G8546

KoolKey as a Gateway KoolKey in Gateway mode connects the ERC controller to PC to work online with PC software “KoolProg”.
KoolKey as a Programming key is used for transferring parameter settings files from the KoolKey to the controller and vice versa (bidirectional setting file transfer)
Mass Programming Key (EKA 201) Mass Programming Key is a simple programming key for programming the controller in production assembly line. This is write only device and requires KoolProg software to load the setting file in to the device. Refer to the EKA 201 installation guide for detailed instructions.

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User Guide | ERC 112 Refrigeration Controller

Technical specs
Power Supply Purpose of control Construction of Control Automatic Action
Input
Output
Probes
Connectors Programming Assembly Display Keypad Operating Conditions Storage Conditions Range of Measurement Protection Environmental Resistance to heat & fire EMC category Over Voltage Category Temperature for Ball Pressure Test For SELV Circuits Operating Cycles
Approvals

100 – 240 V AC Switch mode power supply. Average 0.7 W

To control commercial Refrigeration Applications

Electronic control for incorporation for use in Class I and Class II appliance

Micro- disconnection on operation type 1.B

5 inputs: 4 analogue (digital), 1 digital; user specific assignment; Optional: External button input

· Cabinet air/Evaporator/Condenser

· Door sensor: all types, user specific

· Light sensor: Danfoss ECO light sensor

· Motion sensor

UL60730

EN60730

“DO1” (Compressor relay)

120 V AC: 16 A resistive/FLA16/LRA72 240 V AC: 10 A resistive/FLA10/LRA60

16(16) A

“DO4”

8 A resistive, FLA2/LRA12, TV-1

8 A resistive, 2(2) A

“DO5”

FLA2/LRA12, TV-1

8 A resistive, 2(2) A

“DO6”

FLA2/LRA12, TV-1

8 A resistive, 2(2) A

Max 10 A total “DO4-6”

Danfoss NTC sensors and Danfoss ECO accessories (Light, Motion and Door sensors) Danfoss Pt 1000 ohm/0°C

Modular connector system for OEM customers, with optional output screw terminal adapter; Input connector type: Rast2 5 Edge connectors; output connector type: RAST 5 standard

Programming with Danfoss KoolProg PC software, Docking station and Programming key

Front mounting; Brackets

LED display, 3 digit, decimal point and multi functionality icons; °C/°F scale

4 buttons (integrated IP65 design), 2 left, 2 right; user programmable

0 +55 °C, 93% RH, non-condensing

-40 +85 °C, 93% RH

-40 +85 °C with standard sensors (-40 +200 °C when using NTC 100K sensors)

Front: IP65 Rear: water and dust protection corresponds to IP31, accessibility of connectors limit rear part rating to IP00

Pollution degree II, non-condensing

Category D (UL94-V0)

Category I

Category II (IEC 60664-1)

According to EN 60730-1, Annex G

Input Probes or Digital Input connected to SELV limited energy >15W
Compressor relay: more than 175,000 at full load (16A (16A))
R290/R600a end-use applications employing in accordance to These approvals are only valid when used with recommended Danfoss EN/IEC 60335-2-24, annex CC and EN/IEC 60335-2-89, annex BB accessories. Glow wire according to EN/IEC 60335-1 IEC/EN 60730 UL60730 NSF CQC EAC Ukraine

IMPORTANT NOTE The inputs are not galvanic isolated and are connected directly to the mains supply! For that reason, door-switches, sensors as well as the cables must fulfil the reinforced insulation requirements. Dimensions
36,5 mm
78,25 mm

78,25 mm 82,25 mm

28 mm

28,5 mm

71 mm

Front mounting (Lock with frame)

30 mm

71 mm

Rear mounting (Lock with clips)

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Connections (Inputs and outputs are configurable)

Danfoss 80G31

Note S4 Port can also be used to connect other sensors and Door sensor.
© Danfoss | Climate Solutions | 2024.11

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Code numbers
Sx (di)= connector position. Inputs are configurable.

Type
ERC 112C GDM – Red ERC 112D GDM – Red ERC 112C GDM – Blue ERC 112D GDM – Blue ERC 112C GDM – Red, STM32 ERC 112D GDM – Red, STM32 ERC 112C GDM – Blue, STM32 ERC 112D GDM – Blue, STM32

I-Pack Qty. Code no. 27 080G3202 27 080G3203 27 080G3206 27 080G3207 27 080G3489 27 080G3490 27 080G3491 27 080G3492

ERC 112C CFF – Red, Buzzer

27 080G3212

ERC 112D CFF – Red, Buzzer

27 080G3213

ERC 112C CFF – Blue, Buzzer

27 080G3216

ERC 112D CFF – Blue, Buzzer

27 080G3217

ERC 112C CFF – Red, Buzzer, STM32 27 080G3493

ERC112D CFF – Red, Buzzer, STM32 27 080G3498

ERC 112C CFF – Blue, Buzzer, STM32 27 080G3494

ERC 112D CFF – Blue, Buzzer, STM32 27 080G3499

ERC 112D CFF – Red, Buzzer, STM32 27 080G3471

ERC 112C CFF – Blue, Buzzer

27 080G3233

ERC 112D CFF – Blue, Buzzer,

27 080G3413

ERC 112C CFF – Blue, Buzzer, STM32 27 080G3496

Temperature sensors

-40 85 °C, PVC Standard, NTC 5 K

S1, 470 mm, 3-pole

120 077F8751

S1, 1000 mm, 3-pole

120 077F8757

S1, 1500 mm, 3-pole

120 077F8761

S1, 2000 mm, 3-pole

120 077F8765

S1, 2200 mm, 3-pole

120 077F8767

S1, 3000 mm, 3-pole

60 077F8769

S1, 3500 mm, 3-pole

60 077F8723

S1, 6000 mm, 3-pole

27 080G2019

-40 120 °C, TPE precision NTC 5 K, Santroprene

S1, 1500 mm, 3-pole

120 077F8726

-20 175 °C, Silicone rubber cable, NTC 100 K

S1/S3, 2000 mm, 3-pole

108 080G2043

-40 85 °C, PVC Standard, NTC 5 K

S2, 1000 mm, 2-pole

120 077F8786

S2, 1500 mm, 2-pole

120 077F8790

S2, 2000 mm, 2-pole

120 077F8794

S2, 3000 mm, 2-pole

60 077F8798

S2, 6000 mm, 2-pole

27 080G2029

S3, 1000 mm, 3-pole

120 077F8756

S3, 1500 mm, 3-pole

120 077F8760

S3, 2200 mm, 3-pole

120 077F8766

S3, 3000 mm, 3-pole

60 077F8768

-100 200 °C, Pt 1000

S4, 1000 mm, 3-pole

108 080G3350

Type
Light-sensors S3, 3000 mm, 3-pole

I-Pack Qty. Code no.
108 080G3315

Magnetic door sensor di/S4, 2000 mm, 3-pole di/S4, 3000 mm, 3-pole

81 080G3322 81 080G3324

Cable door sensor di/S4, 1000 mm, 3-pole di/S4, 2000 mm, 3-pole di/S4, 3000 mm, 3-pole di/S4, 4000 mm, 3-pole

108 080G3340 108 080G3341 108 080G3342 81 080G3343

Motion sensor S3/di, 3000 mm, 3-pole

27 080G3392

Clips Black (2 needed per controller)

54 080G3308

Programming tools and other accessories

KoolKey (EKA 200)

1 080N0020

Mass Programming Key (EKA 201) 1 080N0021

Interface cable, ERC11x (to connect with EKA 200 and EKA 201)

1 080N0328

Interface cable to connect EKA 201 in gateway mode

1 080N0324

Power plug *

6-pole with screw

54 080G3357

* The connectors are rated for 28 Amps max.

Note: For more information about temperature sensor types and connectors, please refer to Danfoss’ technical brochure “NTC type temperature sensors for ETC & ERC controllers”.

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Operation
Programming Tools

The controller can be configured in four ways: Using: · KoolProg and KoolKey as Gateway · KoolKey as Copy key · KoolKey with Docking station · Buttons on the front panel of the controller.

All these tools are supplied separately. For technical literature and further information, please contact your local Danfoss representative.

Manual operation with buttons (Direct Access)

1 Press: variable direct function, e.g. “ECO”/”Night mode” Sub function: back

1 Press: temperature set point Sub function: “up”

1 Press: variable direct function, e.g. light Sub function: “OK”

1 Press: temperature set point Sub function: “down”

Examples

Changing the Desired Temperature Set point: 1. The display shows the current temperature. 2. Press “up/down” to access set point. 3. Press “up/down” to adjust set point.
After 30 seconds, the display automatically reverts to showing the current temperature
Turning ON/OFF the ECO Function: 1. Press “ECO”.
The green “ECO” symbol is lit when in “ECO” mode.
Turn ON/Off the Light: 1. Press the “Light” button.
Acknowledging Alarms: 1. Display Flashing the alarm message. 2. Press any button to acknowledge.
Password protection: 1. Press “^” and “v” together and hold 5 seconds to access the menu. 2. The display shows “PAS” (only if configured for password protection). 3. Press “OK”. 4. Press “^” / “v” to the code. 5. Press “OK”.
Password protection on three levels: 1. Level 1: “shop” (daily use by shop personnel). 2. Level 2: “ser” (service technician). 3. Level 3: “OEM” (OEM programming).
Changing a Parameter Some parameters may be hidden to you. Your access level will determine which parameters you can view and edit:
1. Press “^” and “v” together and hold 5 seconds to access the menu. 2. First parameter group is shown “tHE”. 3. Press “^” and “v” to find the desired group. 4. Press “OK”. 5. First parameter is shown. 6. Press “^” and “v” to find the desired parameter.

7. Press “OK”. 8. Press “^” and “v” to find the desired setting. 9. Press “OK”.
After 30 seconds, the display automatically reverts to showing the current temperature. Or Press 2 x “Back”.
Info Menu: The Info Menu feature provides the user with key information about the controller, allowing them to quickly access critical data points. Here are the informations that can be viewed through the Info Menu button (based on the button configuration on page 21):
Highest Cab Air Temperature: Displays the highest cab air temperature since the last power on.
Lowest Cab Air Temperature: Displays the lowest cab air temperature since the last power on.
Average Cab Air Temperature: Displays the average cab air temperature since the last power on.
Active Alarms: Displays any active alarms currently being triggered in the system.
Resetting Temperature Values: You can reset the highest, lowest, and average temperature values by pressing the Info Menu button for 5 seconds after entering the menu. This will clear the data collected since the last power on and start fresh.
Note: Incorrect parameter settings can lead to inadequate cooling, excessive energy consumption, unnecessary alarms and in the case of temperature-sensitive food storage, breaches in food hygiene principles and regulations. Only a trained operator should make changes to parameters.

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Menu/functions

ERC menu code Description

“tHE

“SEt”

Min. -100.0°C Max. 200.0°C Default 2.0°C

“SPr”
Min. 0.0 Max. 1.0 Default 0.5

“diF”
Min. 0.0 K Max. 20.0 K Default 2.0 K

Thermostat settings
Set point This parameter defines desired temperature to be maintained in the cabinet or storage area. The set point can be locked to a range within “HSE” and “LSE” settings. The set point can be changed quickly by simply pressing the “temperature up/down” buttons.
Current set point adjustment value diF * SPr The default value is set to 0.5 and the parameter is hidden by default. “Spr” defines the position of the set point in relation to cut-in and cut-out. “Spr=0,5” sets the set point mid between cut-in and cut-out. “Spr=0” sets the set point at the cutout. “Spr=1” sets the set point at cut-in.
Thermostat differential This defines the difference between the cut-out and the cut-in. The desired temperature is determined by “SPr” and “diF”.

“HSE”
Min. -100.0°C Max. 200.0°C Default 50.0°C

Upper limit of thermostat set point Define the temperature range limit of the controller. Once set, the desired temperatue (set point) can not go above “HSE” or below “LSE”.

“LSE”
Min. -100.0°C Max. 200°C Default -35.0°C

Lower limit of thermostat set point Define the temperature range limit of the controller. Once set, the desired temperatue (set point) can not go below “LSE”.

“iCi”
Min. no Max. yes Default no

Initial cut in Comp relay action when Tair is between cut-in and cut-out at power-up: “yES”: cut in the compressor. “no”: cut out the compressor.

“SP2”
Min. -25 K Max. 25 K Default 0

Seasonal offset temperature (This parameter is only available from Product version PV03 onwards. Please check product label for Product version of your controller.) Offset value for set point and alarms when the seasonal offset button is activated. It is an additional offset mode to have separate set points during summer and winter season, which can be activated by long press button after configuring in assignments as “tEc”.

“dF2”
Min. 0 K Max. 20 K Default 2

Seasonal differential Temperature differential during seasonal offset mode. Only applicable during normal operation. During ECO mode, the controller will be worked to the ECO Differential setting. See ECO management section for more details.

FAn “FCt”
Default FAo

Fan settings
Fan control method “FAo”: fan always on “SEt”: fan follow compressor by manual settings. (FoC and FSC needs to be set accordingly) “Aut”: automatical fan control

“Fod”
Min. 0 s Max. 240 s Default 0 s
“FSd”

Fan ON Delay/Fod Fod defines the fan delay (in seconds) after a compressor cut-in.
Fan Stop Delay/FSd “FSd” defines the fan delay after a compressor cut-out.

Min. 0 s Max. 240 s Default 0 s

If both “Fod” and “FSd” are set to zero then the fan runs whenever the compressor runs.

“FoC”
Min. 0 s Max. 960 s Default 0 s
“FSC”
Min. 0 s Max. 960 s Default 0 s

Fan ON Cycle/FoC Fan Stop Cycle/FSC When the compressor is OFF, and “FoC” or “FSC” are not zero, the fan runs in cycles according to “FoC” and “FSC”.
Example: “FoC=120” [sec] and “FSC=120” [sec] means that the fan runs for half the time when the compressor is OFF. When the compressor is on, the fan is always ON (according to “FAo” and “Fod”).

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“FSt”
Min. 0 s Max. 960 s Default 10 s
“FdC”
Min. -10.0 K Max. 10.0 K Default 0.0 K
“Fdt”
Min. 0 s Max. 999 s Default 0 s
“FLt”
Min. 0°C Max. 50°C Default 50

Fan Minimum Stop time Minimum stop time for fan protection.
Fan t cut in (This parameter is only applicable with Automatic fan control “Aut” mode.) Delta T for fan to cut in which the temperature offset comparing with thermostat cut in temperature.
Fan stop time on door open The delay with wich the fan will be stopped after the door has been opened. “0”: fan stop immediately when door open. “1-998”: delay for fan stop after door open. “999”: fan keep running all the time during door open.
Fan limit temperature This function prevents the evaporator fan to operate if the temperature is above the fan limit temperature. If the defrost sensor registers a higher temperature than the one set here, the fan will be stopped to avoid the warm air circulation in the cabinet. This parameter is active only when evaporator sensor is connected.

“FdF”
Min. 1 K Max. 10 K Default 2

Fan limit Delta temperature This is the evaporator delta temperature for the fan to switch ON after it is switched off due to FLt setting.

Lig

Light settings

“CLC”
Min. on Max. dor Default on

Cabinet Light Control This parameter can be set to one of these alternatives to control the light in the cabinet: “on”: always ON. “oFF”: always OFF. “dor”: door sensor only.

“Lod”
Min. 0 s Max. 300 s Default 0 s

Light OFF delay Number of seconds the light will stay ON after the door has been closed.

Pud

Pull Down settings

Pull down (sometimes known as Super Cool) is a procedure for improving cooling performance, accelerating the time used to reach the desired temperature. Pull down settings overrule all other settings.

“Pit”
Min. -40.0°C Max. 50.0°C Default 50.0°C

Pull Down Initiate Temperature This parameter indicates the temperature which causes a pull down to start. If the temperature measured inside the cabinet exceeds this value for longer than one hour, then pull down will start. The compressor will have already cut-in, so the only effect is to stop defrost cycles until the desired temperature is reached. The period of one hour is fixed and cannot be altered.

“PCy”
Min. 0 min Max. 360 min Default 30 min

Pull Down Cycling This is the duration in minutes of the compressor cycling at the reduced set point temperature. Once the desired pull down limit temperature “PLt” has been reached during pull down, the compressor will continue to cycle ON/OFF for the duration of “PCy”. At the end of the period defined by “PCy”, the set point temperature will return to normal and pull down will cease.

“Pdi”
Min. 0 hour Max. 48 hour Default 15 hour

Pull Down Defrost Interval This is the time between defrost cycles during pull down. It is measured in hours and can be up to 48 hours. During pull down, this setting overrides the defrost interval and defrost time settings (see the defrost section).

“Pdd”
Min. 0 hour Max. 48 hour Default 24 hour

Pull Down Duration Maximum time for pull down. If time expires pull down will stop, regardless of temperature.

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“PLt”
Min. -55.0°C Max. 55.0°C Default 0.0°C

Pull Down Limit Temperature This parameter sets the minimum allowed temperature during pull-down. In order to protect valuable contents you must always specify the absolute minimum temperature allowed in your application. For glass door merchandisers 0°C/32°F protects bottles from freezing; for commercial fridges you may opt for a slightly higher temperature (e.g. 2°C)

“Prt”
Min. 0.0 K Max. 10.0 K Default 0.1 K

Pull Down Reduction Temperature t The controller calculates a lower set point during pull down mode to increase the cooling capacity of your appliance. For each hour the cabinet temperature is above the pull down initiate temperature, the set point is reduced with the value of “Prt”.

dEF

Defrost settings

“dFt”
Default no

Defrost Type “no”: defrost function is disabled. “EL”: electrical defrost. “Hgd”: hot gas defrost (contact Danfoss for details). “nat”: OFF-cycle defrost (natural defrost).

“Add”
Min. no Max. yes Default no

Adaptive defrost “no”: defrost controlled by time. “yES”: automatic defrost control activated.

“dtt”
Min. 0.0°C Max. 25.0°C Default 6.0°C

Terminate Temperature This parameter defines at what temperature the defrost cycle will stop. The temperature is given by the evaporator sensor or by the cabinet temperature sensor if no evaporator sensor is used.

“drt”
Min. 0.0°C Max. 200.0°C Default 5.0°C

Defrost reset temperature The defrost counter is saved and restored at power-up, but if the temperature sensor, used for defrost, is higher than this value at power-up, it is assumed that the evaporator is free of ice and the defrost counter will be cleared.

“dii”
Min. 1 hour Max. 96 hour Default 6 hour

Defrost minimum Interval/dii Defines the minimum time period between the start of two defrost cycles. This parameter is applicable only in Adaptive defrost mode. Once the minimum interval has expired, controller will monitor the evaporator temperature and it will start the defrost if evaporator temperature goes below “dEt” or “ddt” value. If not, it will trigger the defrost once the maximum interval “dAi” has been reached. In case of time based defrost it always trigger the defrost at Maximum interval”dAi”.

“dAi”
Min. 1 hour Max. 96 hour Default 7 hour

Maximum Interval Defines the maximum time period between the start of two defrost cycles.

“dit”
Min. 0 min Max. 240 min Default 5 min

Minimum Time Defines the minimum duration of a defrost cycle. During this period, the controller will not check the temperature. Once the minimum time has expired, the temperature will be checked and if the terminate temperature “dtt” has been reached, the defrost cycle will end. If dtt has not been reached, defrost will continue until either dtt is reached or the maximum time “dAt” reached, whichever occurs first.

“dAt”
Min. 0 min Max. 480 min Default 30 min

Maximum Time Defines the maximum duration of a defrost cycle. The controller will not allow a maximum time to be entered which is less than the minimum time, or a minimum time which is more than the maximum time.

“dot”
Min. 0 min Max. 60 min Default 0 min

Drip OFF Time This parameter can be set to between 0 and 60 minutes and defines how long the delay is between the heater being switched OFF and the compressor starting again.

“Fdd”
Min. 0 s Max. 600 s Default 0 s

Fan Delay after Defrost Defines how long the delay is between the start of the compressor after defrost and the fan starting again.

“Ftd”
Min. -25.0°C Max. 25.0°C Default 25.0°C

Fan Start Temperature This only applies if an evaporator temperature sensor is fitted. This parameter determines at what evaporator temperature the fan will start after a defrost cycle is complete. If the time set in “Fdd” occurs before the temperature set in “Ftd”, the fan will start in line with “Fdd”. If the temperature set in “Ftd” occurs first, then the fan will start in line with “Ftd”. It is therefore a case of whichever parameter’s setting is reached first which determines when the fan starts.

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“dFA”
Min. no Max. yes Default no
“dCt”
Min. no Max. yes Default no
“doC”
Min. 0 hour Max. 24 hour Default 0 hour
“dEt”
Min. -50.0°C Max. 0.0°C Default -50.0°C
“ddt”
Min. 0.0 K Max. 30.0 K Default 5.0 K

Defrost Fan On Set to “yES”, the fan will constantly run during defrost cycles. Set to “no”, the fan will not run during defrost cycles.
Defrost by accumulated compressor run time If Yes: Defrost time based on actual accumulated compressor ON time”doC” If NO: Defrost Times based on elapsed time.
Defrost by continuous compressor ON time Continuous compressor running can cause defrost. “0” = deactived
Defrost start evaporator temp Defrost will get triggered at this temperature after expiry of minimum defrost interval “dii” (adaptive defrost only).
Defrost t Defrost t compare with evaporator temperature of first cut out after defrost to trigger defrost start. The defrost start if evaporator temperature has decreased more the “ddt”

“idi”
Min. 0 hour Max. 96 hour Default 3 hour

Initial Defrost Interval The initial defrost interval determines the time for first defrost after power-up. The initial defrost is mainly intended for factory testing of the defrost functionality and can be set to expire after a number compressor cycles according to the setting of parameter idd. During normal operation, the defrost counter will be saved in memory and restored after power loss, making the initial defrost unnecessary.

“idd”
Min. 0 Max. 999 Default 100

Initial Defrost Duration The initial defrost duration is the number of compressor cycles before the initial defrost is deactivated. “0”: “idi” No initial defrost. “1-998”: number of compressor cycles before deactivation. “999”: initial defrost always active.

CoP

Compressor settings

“uPt”
Min. no Max. yes Default no
“uLi”
Min. 0 V AC Max. 270 V AC Default 0 V
“uLo”
Min. 0 V AC Max. 270 V AC Default 0 V
“uHi”
Min. 0 V AC Max. 270 V AC Default 270 V
“EHd”
Default no

Voltage protection “no”: no voltage protection. “yES”: voltage protection activated based on voltage related settings.
Minimum cut-in voltage/uLi. Minimum cut-out voltage/uLo. Maximum voltage/uHi These three parameters provide voltage protection to the compressor. Start by setting “uHi”, followed by “uLo” and “uLi”. “uLi”: when the compressor is due to start, the voltage of the power
supply will be checked and the compressor will only be allowed to start if it is at least the value given in this parameter. “uLo”: when the compressor is running, it will be switched OFF if the voltage goes below that given in this parameter. “uHi”: when the compressor is running, it will be switched OFF if the voltage exceeds that given in this parameter. If the compressor is already stopped, it will remain switched OFF.
Sensor Error Type “no”: no sensor error handling. “SEt”: in case of control sensor error, follow error run/stop time.

“Ert”
Min. 0 min Max. 60 min Default 0 min

Error Run Time The parameter only become active in the unlikely event of a broken temperature sensor. It is used to run the application in safety mode. At the same time the sensor error will be shown in the display. “Ert” define the duration the compressor will run. Example: “Ert=4” [min] and “ESt=16” [min] will provide an average cooling system activity of 20%. Ert and “ESt” values are based on OEM experience and are by default inactive.

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“ESt”
Min. 0 min Max. 60 min Default 1 min
“CSt”
Min. 0 min Max. 30 min Default 2 min
“Crt”
Min. 0 min Max. 30 min Default 0 min
“Cot”
Min. 0 min Max. 480 min Default 0 min
“Cdd”
Min. 0 min Max. 15 min Default 0 min
“Srt”
Min. 0 min Max. 60 min Default 0 min

Error Stop Time The parameter only become active in the unlikely event of a broken temperature sensor. It is used to run the application in safety mode. At the same time the sensor error will be shown in the display. “ESt” define the duration the compressor will be “idle”.
Minimum Stop Time It determines the minimum number of minutes the compressor must remain idle before a Temperature cut-in can take effect. For example, if the temperature sensor indicates that the cut-in temperature has been reached, but the number of minutes set in this parameter have not elapsed since the compressor last stopped, then the compressor will stay OFF. It will only start once the duration given by “CSt” has been reached provided the temperature is still high enough. “CSt” thus overrides the cut-in.
Minimum Run Time It determines the minimum number of minutes the compressor must run before a Temperature cut-out can take effect. For example, if the temperature sensor indicated that the cut-out temperature has been reached, but the number of minutes set in this parameter have not elapsed since the compressor last started, then the compressor will continue. It will only stop once the duration given by “Crt” has been reached provided the temperature is still low enough. “Crt” thus overrides the cut-out.
Maximum OFF Time This is the maximum time in minutes the compressor is allowed to “idle” up to 480 minutes. Cot is set to zero by default (inactive). If the controller is used on a draft beer (ice bank) application, this parameter can be used to control the ice thickness.
Compressor Door Open Delay/Cdd This parameter sets the delay in minutes before the compressor stops when the door is opened. If set to zero, the function is disabled.
System resume after door open Fan and Compressor resume after cut out by door open.

“Pod”
Min. 0 s Max. 300 s Default 300 s

Power ON Delay This is the delay in seconds between power-on and the compressor being activated. Depends on the power ON temperature setting as explained below.

“Pot” Power ON Temperature
Min. -100.0 °C This parameter is used to accelerate the first application test on the Max. 200.0 °C OEM assembly line; if the cabinet temperature is higher than this Default -100.0 °C parameter the power ON Delay is overruled and the outputs are activated
without delay.

“Scd”
Min. 0 sec Max. 960 sec Default 10 sec

Second Compressor delay1) This parameter defines the time delay to start the second compressor in dual compressor application, This parameter is active only when the second compressor is configured to one of the auxiliary relays under assignment “ASI” menu group (o2C or o3C or o4C) 1) This parameter applicable only for dual compressor code 080G3471.

Con

Condenser Protection settings

NOTE: A condensor temperature sensor is required to use these parameters. Condenser protection is generally used in dusty environments where the condenser may accumulate a layer of dust or dirt and therefore be at risk of overheating.

“CAL”
Min. 0°C Max. 200°C Default 80°C

Condenser Alarm Limit/CAL This parameter sets the temperature for the condenser at which an alarm will be generated.

“CbL”
Min. 0°C Max. 200°C Default 85°C

Condenser Block Limit/CbL This parameter sets the temperature which if reached will cause the compressor to switch OFF.

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“CoL”
Min. 0°C Max. 200°C Default 60°C

Condenser OK Limit/CoL This parameter sets the temperature at which the compressor is allowed to start again after the temperature set in “CbL” above has been exceeded and the compressor stopped.

“CLL”
Min. -100°C Max. 20°C Default -5°C

Condenser Low Limit/CLL This parameter sets the lowest (condenser) temperature at which the compressor is allowed to start.

diS

Display settings

NOTE: some display parameters can be set in such as way that they may be illegal in some jurisdictions. Please check local legislation.

“diC”
Min. no Max. yes Default no

Display intensity auto control “no”: display intensity use fixed value.

“din”
Min. 2 Max. 10 Default 10

Display Intensity The controller can have its display intensity (brightness) set in one of two ways: A) With a Danfoss ambient light sensor attached, the brightness of the
display is adjusted automatically according to the ambient light level (see the assignments section). B) When no ambient light sensor is attached, the display intensity can be set to a fixed intensity. Both options are on a scale of 1 to 10, where 10 is the brightest.

“CFu”
Min. °C Max. °F Default °C

Display Unit This parameter sets the display to Fahrenheit or Celsius. Switching from one to the other will cause all temperature settings to be automatically updated accordingly.

“trS”
Default SCo

Temp sensor to display “SCo”: temperature control. “EuA”: evaporator temperture. “Con”: condenser temperature (condenser cleaning). “AuS”: only for showing on display.

“rES”
Min. 0.1 Max. 1 Default 0.1

Display Resolution This parameter can be set to 0.1, 0.5 or 1 and affects the way the temperature is displayed. With the parameter set to 1, the display will only ever show temperatures rounded to the nearest whole degree. At 0.5, it will round the temperature to the nearest half degree for display. For example, 3.3 degrees will be shown in the display as 3.5 degrees and 3.9 as 4.0. With the parameter set to 0.1, no rounding occurs. This parameter does not affect the temperature itself, merely the display.

“rLt”
Min. no Max. yes Default no

Display Range Limit In some point of sales applications you may want to show the desired instead of the real temperature. This parameter sets whether the displayed temperature is the actual temperature or whether it is restricted to the cut-in / cut-out limits. Set to “nO” means that the actual temperature will de displayed. The parameter is set to “nO” by default.

“ddL”
Min. 0 min. Max. 10 min Default 0 min

Display Delay In order to provide a realistic temperature appearance for an application, a display delay can be set. The parameter sets the time constant (tau) of the moving average filter for the display. Physically, one time constant represents the time it takes the system’s step-response to reach 66% of its final value and five time-constants the time it takes to reach 99% of its final value.

“doF”
Min. -10.0 K Max. 10.0 K Default 0.0 K

Display Offset This parameter is a relative value and allows the temperature displayed to be different to the temperature measured. For instance, at a measured temperature of 7°C and “doF” set to -2K, the displayed temperature will be 5°C instead.

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“dLt”
Min. 0 min Max. 60 min Default 15 min
“SEC”
Min. no Max. yes Default no
“SSC”
Min. no Max. yes Default no
“SHo”
Min. no Max. yes Default no
“SdF”
Min. no Max. yes Default yes

Lock Time After Defrost In order not to show a rising temperature during defrosting, the displayed temperature is locked at the temperature shown at the start of the defrost cycle for the number of minutes set in this parameter. “0”: no lock.
Show Economy State If set to “yES”, this parameter causes the display to show ECO when the system is in ECO mode. If set to “nO”, the temperature continues to be displayed.
Show Pull down state If set to “yES”, this parameter causes the display to show SC when the system is in pull down mode. If set to “nO”, the temperature continues to be displayed.
Show Holiday “no”: display will show temperature or ECO mode during holiday mode. “yES”: display will show “HoL” during holiday mode.
Show Defrost If set to “yES”, this parameter causes the display to show DEF when the system is in defrost mode. If set to “nO”, the temperature continues to be displayed.

“SCS”
Min. no Max. yes Default yes
“SFS”
Min. no Max. yes Default yes
“SdS”
Min. no Max. yes Default yes
“SES”
Min. no Max. yes Default yes
“Ld”
Min. -100.0°C Max. 200.0°C Default -100
“Hd”
Min. -100.0°C Max. 200.0°C Default 200

“St”

ALA

Min. -100.0°C Max. 200.0°C Default 200

“HAt”

Min. -100.0°C Max. 200°C Default 15.0°C

Show compressor symbol “no”: compressor symbol will not show on display. “yES”: show compressor symbol on display.
Show Fan symbol “no”: san symbol will not show on display. “yES”: show fan symbol on display.
Show Defrost symbol “no”: defrost symbol will not show on display. “yES”: show defrost symbol on display.
Show ECO symbol “no”: ECO symbol will not show on display. “yES”: show ECO symbol on display.
Minimum Display value If the probe value is less than minimum display value mentioned in this parameter, it doesn’t show the actual value and instead show this minimum only until the probe starts reading a higher value than minimum display value set here.
Maximum display value · Controller will display actual temperature, if the probe value is between
Maximum display value and Signaling threshold value and the trend of the probe is increasing (trend is based on past 10 readings) · Controller will display Error “Err”, if the probe value is more than Signaling threshold value and the trend of the probe is increasing (based on the past 10 readings) · Controller will display “—“if the probe value is more than signaling threshold and trend of the probe is decreasing (based on the past 10 readings) · Controller will display “—“if the probe value is bigger than Max display value and the trend of the probe is decreasing (based on the past 10 readings)
Signalling threshold value Temperature limit for Maximum display visualization
Alarm settings
High Temp Alarm Absolute value. By setting “HAt” to the maximum alarms will be deactivated.

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“LAt”
Min. -100.0°C Max. 200°C Default -50.0°C

Low Temp Alarm Absolute value. By setting “LAt” to the minimum value, alarms will be deactivated. In most situations, the low alarm delay will be set to 0 to warn about too low a temperature immediately.

“Htd”
Min. 0 min Max. 240 min Default 30 min

Alarm delay on high temperature alarm The number of minutes to wait before sounding an alarm once the high temperature alarm temperature is reached.

“Ltd”
Min. 0 min Max. 240 min Default 0 min

Alarm delay on low temperature alarm The number of minutes to wait before sounding an alarm once the low temperature alarm temperature is reached.

“Pdd”
Min. 0 min Max. 960 min Default 240 min

Pull down delay Normally, it is not necessary or desirable to sound an alarm during a pull down (the initial phase of reaching the desired temperature). This parameter prevents the high temperature alarm “HAt” sounding during pull down and after a defrost for the number of minutes set for the parameter. NOTE: it does not apply to the low temperature alarm “LAt”.

“dod”
Min. 0 min Max. 60 min Default 2 min

Door Open delay It is possible to indicate to customers that a door has accidentally been left open. This parameter sets the delay in minutes before the alarm sounds. This is useful in environments where customers/users may hold the door open while making their selection. If the door is closed again before the set number of minutes is reached, the alarm does not sound. NOTE: a door sensor is required if this parameter is to be activated.

“uAL”
Min. no Max. yes Default no

Voltage alarm “no”: no voltage alarm. “yES”: voltage alarm activated.

“LEA”
Min. 0 hour Max. 96 hour Default 0 hour

Leakage alarm Leakage detection for compressor protection. If compressor operates for more than the set time, an alarm will be triggered. “0”: disable

“Abd”
Min. 0 min Max. 999 min Default 0 min

Alarm Buzzer Duration The alarm sounds for 10 seconds, followed by silence for 50 seconds. One alarm sequence therefore lasts 60 seconds. These values cannot be changed. This parameter determines how long in minutes an audible alarm will continue while there is still a reason to have an alarm. If set to 999, the alarm will continue to sound until the reason for the alarm is cleared for example the temperature has dropped enough or the door closed. In some cases, it may be necessary for a user or technician to take action in order to clear the alarm. If set to 0, the alarm will never sound.

“ACA”
Min. no Max. yes Default yes

Auto Clear of Alarm/Error/ACA If this parameter is set to “nO”: The alarm status will not disappear automatically even if the condition which caused the alarm is no longer valid or present. If set to “yES”: As soon as the condition which caused the alarm is no longer valid or present, the alarm status will automatically change back to inactive. There will be no trace of the alarm having occurred. In general, glass door merchandise applications will be set to “yES” and commercial fridges and freezers set to “nO”. For example, if the temperature goes too high for a period there may be food safety considerations in a freezer containing food but not in a fridge with cold drinks.

AHC

Automatic Heater settings

Automatic Heater Control applies reverse cooling mode (heating) to your refrigeration appliance where the ambient temperature can go below the set point. A) It will use the Defrost output to control the heating
function when needed. Defrost operations will operate as normal. B) Automatic heater will only operate when using Electric Defrost. It is disabled with Natural Defrost or Hot Gas Defrost.

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“AuH”
Min. no Max. yes Default no

Automatic Heater Mode Enable This setting is normally set to “no”. When set to “yES”, parameters “End”, “AHS” and “AHD” apply.

“End”
Min. 0 min Max. 360 min Default 60 min

Energy Mode Delay This is the delay in minutes between the heater and the compressor operation. The heater is not allowed to start until this number of minutes has expired after the compressor has cut out and vice versa.

“AHS”
Min. -100.0 °C Max. 200.0 °C Default 2.0°C

Auto Heat set point Set point of auto heating.

“AHd”
Min. 0.0 K Max. 20.0 K Default 2.0 K

Auto heat differential Thermostat differential for auto heatting.

ECS

ECO strategy

NOTE: some of these parameters require the installation of the Danfoss Ambient Light Sensor. The Danfoss USB Gateway in combination with “KoolProg Software” allows for real time measurement of the current light intensity. Danfoss recommends testing and adjusting “SLd” and “SLn” values according to customers’ specific needs.

“ECo”
Min. no Max. yes Default Yes

ECO ON/OFF ECO active or not. If no all other settings are not active.

“EdA”
Min. 1 Max. 10 Default 1

Door Actions Times of door action to trigger exiting ECO

“EPA”
Min. 1 Max. 10 Default 1

Pir Actions Times of “PIR” action to trigger exiting ECO

“ECt”
Min. 0 min Max. 180 min Default 30 min

Action counter time It is the duration of time for which the controller will check for number of times of Door action or activity through PIR sensor (mentioned in “EDA” and “EPA” parameters) to exit the ECO mode.

“Edd”
Min. 0 min Max. 180 min Default 180 min

Door delay Door delay after door close to trigger entering ECO

“EPd”
Min. 0 min Max. 180 min Default 120 min

Pir delay “PIR” delay to trigger entering ECO

“SLd”
Min. 0 Max. 80 Default 5
“SLn”
Min. 0 Max. 80 Default 3

Shop Light Day/SLd Shop Light Night/SLn These parameters are set as the percentage of the maximum light and determine when the device moves into or out of ECO mode for power-saving purposes. Requires Light Sensor. “SLd” is the amount of ambient light which will cause the device to
move to normal/serving mode from ECO mode (normally occurs in the morning). “SLn” is the amount of ambient light which will cause the device to move to ECO mode from normal/serving mode (normally occurs in the evening).

“tto”
Min. 0 hour Max. 168 hour Default 0 hour

Time to pull down Time that ERC must stay in ECO to go into Pulldown upon exiting ECO. E.g: If tto = 2, if the ERC stays in ECO for 2 or more hours, it will go into Pulldown after exiting ECO. If it stays in ECO for less than 2 hours, it will go to Serving Mode upon exiting ECO.

“LSd”
Min. 0 min Max. 180 min Default 0 min

Light Source delay on ECO Time delay for light source to change from serving mode source to ECO mode source.

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“Euu”
Min. no Max. yes Default yes

EWU active on/OFF Enable or disable early wake up.

“CLH”
Min. 0 hour Max. 24 hour Default 6 hour

Shop close hour Shop is assumed to be closed when staying in ECO mode longer than shop close hour.

“ErL” Early wake up time offset

Time of exiting ECO mode for next day=

Min. 0 min Max. 240 min

Time of first activity to exit ECO mode – the early wake-up time.

Default 120 min “0”: early wake up function disabled.”

“HoL”
Min. 0 hour Max. 999 hour Default 72 hour

Holiday Length If controller stays for longer than HoL in ECO and no activity is detected, the controller will go into Holiday Mode. Early Wake Up is disabled.

ECA

ECO management

“Eto”
Min. -25,0 K Max. 25.0 K Default 4.0 K

Eco Temperature Offset This parameter gives a relative temperature in degrees. It is the difference in temperature for ECO mode operation compared to normal mode. NOTE: setting a temperature offset may be illegal in some jurisdictions.

“Hto”
Min. -25.0 K Max. 25.0 K Default 6.0 K

Holiday Temperature Offset Increase or decrease of temperature with respect to normal mode during holiday mode.

“diE”
Min. 0.0 K Max. 10.0 K Default 2.0 K

ECO Differential Thermostat differential for ECO.

“FoE”
Min. 0 s Max. 960 s Default 0 s

ECO Fan on cycle On time for fan during compressor OFF period in ECO mode.

“FSE”
Min. 0 s Max. 960 s Default 0 s

ECO Fan stop cycle OFF time for fan during compressor OFF period in ECO mode.

“ELC”
Default on

ECO Cabinet light control “on”: always ON (Button is default to control light for all these options). “oFF”: always OFF. “dor”: door sensor only.

“ELd”
Min. 0 min Max. 10 min Default 5 min

Eco Light Delay This parameter causes a delay to the switch from normal to ECO mode when the shop lights are switched ON or OFF. The ambient light sensor detects the change in light level and causes a switch mode. With this parameter set to zero, the switch OFF mode occurs immediately. If not set to zero (max: 10 minutes), then the change will be delayed by the number of minutes set.

ASi

Assignments settings

“uSA”
Min. no Max. yes Default no

MODBUS Safety “no”: MODBUS auto detection is enable and serial communication is available for configuration KoolProg Software. “yES”: MODBUS communication is deactivated.

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“t1A”
Min. -20.0 K Max. 20.0 K Default 0.0 K
“t2A”
“t3A”

Air Temperature Adjustment (applies to non-Danfoss temperature sensors only) This parameter is a relative value and allows adjustment of the control sensor temperature. For instance, at a measured temperature of 7*C and “tAd” set to -2 K, the input from the control sensor will be 5*C instead.

“t4A”

“S1C”
Default Stn
“S2C”
Default Stn
“S3C”
Default Stn
“S4C”
Default Stn
“S1A”
Default SCo
“S2A”
Default nC
“S3A”
Default nC
“S4A”
Default nC
“diC”
Default non

Inputs and outputs are configurable There are two steps: 1. Define the type of sensor attached to the input:
– temperature: light/digital. 2. Define the application for the sensor:
– temperature: control/condenser/evaporator. – light: ECO/display/both. – motion – digital: door sensor. Please contact your local Danfoss representative for information about default settings.
NOTE: coded sensors will impact on the number of possible configurations. For instance: Danfoss supplies only 2-pole defrost sensors, so input “S3” will most likely be used as a defrost/evaporator temperature sensor input.
S1 Config/S1C S2 Config/S2C S3 Config/S3C S4 Config/S4C Available options are: “Stn”: for a standard temperature sensor NTC 5 K @ 25°C and TPE precision. “Htn”: for a high temperature sensor NTC 100 K @ 25°C. “Pt1”: for a temperature sensor Pt1000 ohm @ 0°C (only “S4”). “Ldr”: for a light sensor (values given in Luminens). “dig”: for a digital sensor with simple ON/OFF indication
(motion, magnet, switch, buttom).
S1 Application/S1A S2 Application/S2A S3 Application/S3A S4 Application/S4A Available options are: “nC”: not connected. “SCo”: temperature control. “EuA”: evaporator temperature. “Con”: condenser temperature (Condenser cleaning). “AuS”: only for showing temperature on display. “Ldr”: light sensor, Luminens. “ECo”: external input to control ECO mode. “doC”: door contact, contact closed when door closed. “doo”: door contact, contact open when door closed. “Pir”: motion sensor (only “S3”). “bt5”: button 5 (only “S4”).
DI Config This is the digital input used for a digital sensor or bus communications. “non”: not used. “doC”: door contact, contact closed when door closed. “doo”: door contact, contact open when door closed. “ECo”: external input to control ECO mode. “Pir”: motion sensor. Passive infrared.

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“o1C”
Default CoP
“o2C”
Default dEF
“o3C”
Default FAn
“o4C”
Default Lig
“b1C”
Default noP
“b1L”
Default PoF
“b2C”
Default dEF
“b2L”
Default inF
“b3C”
Default tP
“b3L”
Default ECo
“b4C”
Default tn
“b4L”
Default Lig
“b5C”
Default noP
“b5L”
Default noP

D01 Config “CoP”: direct compressor control. “PiC”: pilot Relay (no zero cross) if using pilot relay to control a
compressor, this option must be used instead of “CoP”. “HEt”: heating application, inverse output. “PiH”: pilot heat relay (no zero cross).

D02 Config/o2C D03 Config/o3C D04 Config/o4C “no”: not used. “dEF”: electric defrost heater/valve for hot gas. “ALA”: alamr output. “FAn”: fan control. “Lig”: light control. “SCC”: Second compressor control (applicable only for dual compressor code 080G3471).

Lower left button: Button 1 Config (short press)/b1C Button 1 Config (long press)/b1L
Upper left button: Button 2 Config (short press)/b2C Button 2 Config (long press)/b2L
Upper right button: Button 3 Config (short press)/b3C Button 3 config (long press)/b3L
Lower right button: Button 4 Config (short press)/b4C Button 4 Config (long press)/b4L

The buttons can be programmed as follows:

Short press function

Long press function (3 s.)

“noP”: not operating “tP”: increase set point “tn”: decrease set point “ECo”: toggle Eco mode “Lig”: toggle light “dEF”: toggle defrost “SuP”: toggle super-cool/pull down “diP” : increase display intensity “din” : decrease display intensity “CFA”: toggle °C and °F

“noP”: not operating “tP”: increase set point “tn”: decrease set point “ECo”: toggle Eco mode “Lig”: toggle light “dEF”: toggle defrost “SuP”: toggle super-cool/pull down “diP”: increase display intensity “din”: decrease display intensity “CFA”: toggle °C and °F “PoF”: ERC power ON/OFF “HoL”: enter holiday mode “inF”: enter info menu “tEc”: Toggle Winter & Summer Eco mode

NOTE: Your assignments may not be shown on the printed buttons. We advice to use this functionality together with the fully integrated mounting model only.

Button 5 Config (short press) / b5C Button 5 Config (long press) / b5L (Button 5 is an external button option which can be connected and configured through S4 sensor.)

Short press function
“noP”: not operating “ECo”: toggle ECO mode “SuP”: toggle super-cool/pull down “Lig”: toggle light “dEF”: toggle defrost

Long Press function (3 s.)
“noP”: Not operating “ECo”: Toggle Eco mode “SuP”: Toggle Super-Cool /Pull-down “Lig”: Toggle light “dEF”: Toggle defrost “PoF”: ERC power ON/OFF “HoL”: enter holiday mode

“PS1”
Min. 0 Max. 999 Default 0
“PS2”
Min. 0 Max. 999 Default 0
“PS3”
Min. 0 Max. 999 Default 0

Password level 1 / PS1 Password Level 2 / PS2 Password Level 3 / PS3 These assign passwords to the three levels of access. The password is a three-digit number. Access levels are Shop, Service and OEM. You may not therefore have access to change all the passwords. Passwords are entered by using the up and down arrow buttons. Danfoss advises against using passwords which are easy to remember or enter, for example 111, 222, 123 etc.
NOTE: When accessing the controller with 3 wrong password in a sequence ERC will automatically block access for 15 minutes.

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Ser

Service information settings

The parameters in the following section are READ ONLY and cannot be changed by the user. They provide information for technicians and OEM users.

“ACt”

NOTE: the only parameters that can be configured are: “oEL”, “oEn”, “oEH”. These parameters allow OEMs to enter their own product code.
Accumulated Comp. run time

“AFt” Accumulated Fan run time

“ALt” Accumulated Light run time

“AEt” Accumulated ERC up time

“Sdi” “uAC” “ouS”
“rL1” “rL2” “rL3” “rL4” “int” “dnt” “ont” “Snu” “Fir” “HAr” “onL” “onH” “oEL”

DI physcial DI pin state (ON; OFF).
Voltage value Current main power supply voltage.
DOs Status Current relay open closed status. “IIII” = all relay ON (Upper bar for on, Lower bar for OFF). “II” = DO1 ON, DO2 OFF, DO3 & DO4 NA (no bar if relay not mounted). “IIII” = all relay OFF (Upper bar for on, Lower bar for OFF).
Relay 1 counter Thousands of cycles of compressor relay since manufacture.
Relay 2 counter Thousands of cycles of no. 2 relay since manufacture.
Relay 3 counter Thousands of cycles of no. 3 relay since manufacture.
Relay 4 counter Thousands of cycles of no. 4 relay since manufacture.
Interval Counter Compressor run time since last defrost.
Defrost time counter Duration of last defrost cycle [min].
Door open counter “ont/100″=number of door openings since last reset.
Serial number Serial number given at manufacturing.
SW version Danfoss software version number.
HW version Danfoss hardware version number.
OrderNoLow Danfoss order code number.
OrderNoHigh Danfoss order code number.
OEM code Low

“oEn” OEM code Middle

“oEH” OEM code High

“PAr” “CHd”

Parameter version OEM parameter version number [requires EKA copy key update].
Manufacturing date Programme date WWY: week number and year number (2010-19).

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“SFC” “Ctt” “Et1” “Et2” “AuS” “LLu” “Pir”

Set as Default Resets all parameters to last good OEM settings.
Condenser Temp Temperature of the condensor sensor.
Evaporator1 Temp Temperature of the evaporator sensor1.
Evaporator2 Temp Temperature of the evaporator sensor2.
AUX Temp. Temperature of the AUX sensor. invisible.
Light level value Actual light level value from light sensor.
Motion sensor state

“att” Raw Sair Temp

“ESS” External ECO switch state

“unP”

Display messages Device is unprogrammed (relay output is locked)

“Prg” Device has not finished programming (relay output is locked)

“Eco” Device is in Eco mode “SC” Device is in pull-down mode (super-chill) “dEF” Device is defrosting “HoL” Device is in Holiday mode

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Troubleshooting

Problem Compressor does not start
Fan does not start

Probable cause
Waiting for compressor delay timer Defrost in progress Line voltage to compressor too low or too high
Door is open or door contact is defective

Defrost does not start

Controller in pull down mode

Alarm does not sound

Alarm delayed

Display brightness is weak
Shift between ECO and normal mode does not happen on ambient light change
Display alternates between condenser and temperature
Display alternates between high and temperature
Display alternates between low and temperature
Display shows “dEf”

Ambient light sensor broken Ambient light sensor broken or light level not set properly Condenser too hot
Temperature too high
Temperature too low
Defrost in progress

Remedy Check CoP->CSt Check CoP ->Pot /Pod Check dEF ->dit, dot Check CoP->uLi, uLo, uHi Fan stops when door is opened Check that door contact is ok Defrost might be delayed during pull down Check parameter Pud->Pdi Check ALA->Htd, Abd Check Pud->Pdd Replace sensor Check Eng->SLd, SLn
Clean condenser Check Con ->CAL, CbL Check ALA->HAt
Check ALA -> LAt
Check diS ->SdF

Alarm code “Hi” “Lo” “Con” “dor” “uHi” “uLi” “LEA”
“E01”

Trigger

Automatic clearance

Air temperature is higher than User configured “ALA->Hat” for “ALA->Htd”

Air temperature is lower than User configured “LAt” for “Ltd”

Condenser temperature is too User configured high or too low

Door open for more than “ALA -> dod”

Always

Line voltage is higher than “Cop->uHi”

Always

Line voltage is lower than “Cop->uLi”

Always

Compressor continuous running for more than “ALA->LEA”

Always

“S1” error

Always

Outputs
Blink “Hi” with the highest temperature; If configured: cut in alarm relay, beep the buzzer Blink “Lo” with the lowest temperature. If configured: cut in alarm relay, beep the buzzer Blink “Con”. If configured: cut in alarm relay, beep the buzzer
Blink “dor”. If configured: cut in alarm relay, beep the buzzer
Blink “uHi”. If configured: cut in alarm relay, beep the buzzer
Blink “uLo”. If configured: cut in alarm relay, beep the buzzer.
Blink “LEA”. If configured: cut in alarm relay, beep the buzzer
Blink “E01”. If configured: cut in alarm relay, beep the buzzer

“E02” “S2” error

Always

Blink “E02”. If configured: cut in alarm relay, beep the buzzer

“E03” “S3” error

Always

Blink “E03”. If configured: cut in alarm relay, beep the buzzer

“E04” “S4” error

Always

Blink “E04”. If configured: cut in alarm relay, beep the buzzer

Comments
High temperature alarm
Low temperature alarm
Condenser alarm
Door open alarm
High voltage alarm
Low voltage alarm
Leakage alarm
“S1” sensor failure (short or open) “S2” sensor failure (short or open) “S3” sensor failure (short or open) “S4” sensor failure (short or open)

24 | BC200686422115en-001201

User Guide | ERC 112 Refrigeration Controller
Typical applications Glass Door Merchandiser, No-frost freezer/sub-zero cooler

Note: this is a typical (default) wiring diagram since both inputs (AI/DI’s) and outputs (DO’s) can be assigned differently. Please see “ASi”, assignment

Temperature Sensor for

Cabinet Temperature

Control

PVC Standard

Connector type (S1)

3-pole

470 mm

077F8751

1000 mm 077F8757

1500 mm 077F8761

2000 mm 077F8765

2200 mm 077F8767

3000 mm 077F8769

3500 mm 077F8723

6000 mm 080G2019

Temperature Sensor for Evaporator
Temperature Control PVC Standard Connector type (S2) 2-pole
1000 mm 077F8786
1500 mm 077F8790 2000 mm 077F8794 3000 mm 077F8798 6000 mm 080G2029

Temperature Sensor for Condenser Temperature
Control PVC Standard Connector type (S3) 3-pole
1000 mm 077F8756
1500 mm 077F8760 2200 mm 077F8766 3000 mm 077F8768 6000 mm 080G2039

Glass Door Merchandiser

ERC 112D Red LED without buzzer Blue LED without buzzer Red LED without Buzzer, STM32 Blue LED without Buzzer, STM32

080G3203 080G3207 080G3490 080G3492

Motion detection also connectable to S3
Motion sensor Connector type (di) 3-pole 1000 mm 080G3390 2000 mm 080G3391 3000 mm 080G3392 4000 mm 080G3393

Door input

Door sensor cable di/S4 3-pole

1000 mm
2000 mm 3000 mm 4000 mm

080G3340
080G3341 080G3342 080G3343

Magnetic door sensor di/S4 3-pole

1000 mm 2000 mm 3000 mm

080G3320 080G3322 080G3324

Temperature Sensor for

Cabinet Temperature

Control

PVC Standard

Connector type (S1)

3-pole

470 mm

077F8751

1000 mm 077F8757

1500 mm 077F8761

2000 mm 077F8765

2200 mm 077F8767

3000 mm 077F8769

3500 mm 077F8723

6000 mm 080G2019

Temperature Sensor for Evaporator
Temperature Control PVC Standard Connector type (S2) 2-pole
1000 mm 077F8786
1500 mm 077F8790 2000 mm 077F8794 3000 mm 077F8798 6000 mm 080G2029

Temperature Sensor for Condenser Temperature
Control PVC Standard Connector type (S3) 3-pole3-pole
1000 mm 077F8756
1500 mm 077F8760 2200 mm 077F8766 3000 mm 077F8768 6000 mm 080G2039

ERC 112C Controller Red LED without buzzer Blue LED without buzzer Red LED without buzzer, STM32 Blue LED without buzzer, STM32

080G3202 080G3206 080G3489 080G3491

Motion detection also connectable to S3
Motion sensor Connector type (di) 3-pole 1000 mm 080G3390 2000 mm 080G3391 3000 mm 080G3392 4000 mm 080G3393

Door input

Door sensor cable di/S4 3-pole

1000 mm
2000 mm 3000 mm 4000 mm

080G3340
080G3341 080G3342 080G3343

Magnetic door sensor di/S4 3-pole

1000 mm 2000 mm 3000 mm

080G3320 080G3322 080G3324

BC200686422115en-001201 | 25

User Guide | ERC 112 Refrigeration Controller Gastro No-frost freezer

ERC 112D Controller Red LED with buzzer Blue LED with buzzer Red LED with buzzer, STM32 Blue LED with buzzer, STM32

080G3213 080G3217 080G3498 080G3499

Temperature Sensor for Cabinet Temperature Control

PVC Standard Connector type (S1) 3-pole

470 mm
1000 mm 1500 mm 2000 mm 2200 mm 3000 mm 3500 mm 6000 mm

077F8751
077F8757 077F8761 077F8765 077F8767 077F8769 077F8723 080G2019

Gastro Cooler

Temperature Sensor for Evaporator Temperature
Control

PVC Standard Connector type (S2) 2-pole

1000 mm
1500 mm 2000 mm 3000 mm 6000 mm

077F8786
077F8790 077F8794 077F8798 080G2029

Temperature Sensor for Condenser Temperature
Control

PVC Standard Connector type (S3) 3-pole

1000 mm
1500 mm 2200 mm 3000 mm 6000 mm

077F8756
077F8760 077F8766 077F8768 080G2039

Door input

Door sensor cable di/S4 3-pole

1000 mm
2000 mm 3000 mm 4000 mm

080G3340
080G3341 080G3342 080G3343

Magnetic door sensor di/S4 3-pole

1000 mm 2000 mm 3000 mm

080G3320 080G3322 080G3324

ERC 112C Controller Red LED with buzzer Blue LED with buzzer Red LED with Buzzer, STM32 Blue LED with buzzer, STM32

080G3212 080G3216 080G3493 080G3494

Temperature Sensor for Cabinet Temperature Control

PVC Standard Connector type (S1) 3-pole

470 mm
1000 mm 1500 mm 2000 mm 2200 mm 3000 mm 3500 mm 6000 mm

077F8751
077F8757 077F8761 077F8765 077F8767 077F8769 077F8723 080G2019

Temperature Sensor for Evaporator Temperature
Control

PVC Standard Connector type (S2) 2-pole

1000 mm
1500 mm 2000 mm 3000 mm 6000 mm

077F8786
077F8790 077F8794 077F8798 080G2029

Temperature Sensor for Condenser Temperature
Control

PVC Standard Connector type (S3) 3-pole

1000 mm
1500 mm 2200 mm 3000 mm 6000 mm

077F8756
077F8760 077F8766 077F8768 080G2039

Door input

Door sensor cable di/S4 3-pole

1000 mm
2000 mm 3000 mm 4000 mm

080G3340
080G3341 080G3342 080G3343

Magnetic door sensor di/S4 3-pole

1000 mm 2000 mm 3000 mm

080G3320 080G3322 080G3324

26 | BC200686422115en-001201

User Guide | ERC 112 Refrigeration Controller

Application Matrix

ERC 112
Application
Standard beverage cooler
Sub-zero beverage cooler
Out-door beverage cooler
Nofrost freezer w. glassdoor
CFF refrigerator
CFF freezer
S: connector position

ERC type DO1 ERC 112C Comp
ERC 112D Comp
ERC 112D Comp
ERC 112D Comp ERC 112C Comp ERC 112D Comp

Output DO2 DO3

Fan

Lamp

Heater Fan

Fan

Lamp

Heater Fan

DO4
Lamp Lamp Lamp Lamp

S1 Control
Control
Control
Control Control Control

Input

Defrost

Condenser or Ambient Light or Motion detection

Defrost

Condenser or Ambient Light or Motion detection

Condenser

Ambient Light or Motion detection

Evaporator

Condenser or Ambient Light or Motion detection

Defrost Condenser

Door or Motion detection

Door

NOTE: · Select only one function per input, e.g. condenser sensor or ambient light sensor. · Make sure that the accessory you select has a matching connector to the input, e.g. a sensor for input “S2” must have “S2” connector. · Condenser sensor or light sensor are optional and can be omitted. · Defrost sensor is mandatory when electrical heater is used for defrost. For natural defrost it can be omitted.

BC200686422115en-001201 | 27

User Guide | ERC 112 Refrigeration Controller
Sensor placement Control sensor Control sensor
Evaporator sensor Condenser sensor
28 | BC200686422115en-001201

The control sensor must always be connected and is used for controlling the cut-in and cut-out of the compressor according to the set point. The sensor is also used for the displayed temperature.
Vertical coolers with fan Most common placement is in the return air to the evaporator. The sensor can be placed close to the fan even when the fan is pulsed during compressor OFF periods: the updating of the temperature is blocked when the fan is stopped and only updated when the fan has been running for a while, so that the heat from the fan does not affect the temperature reading. For applications sensitive to sub-zero temperatures, sensor placement in the evaporator outlet air can be considered.
Vertical freezers with fan Placement in the return air or in the freezer compartment.
Coolers without fan The best results are normally obtained when the sensor is placed at the side-wall, 10 cm from the back and approximately at 1/3 from the bottom or where the evaporator ends. The control sensor must always be connected and is used for controlling the cut-in and cut-out of the compressor according to the set point. The sensor is also used for the displayed temperature.
The evaporator sensor is only used for de-icing of the evaporator and has no control purpose.
Placement of sensor Place the sensor where the ice melts last. Please be aware of that sharp finns can damage the cable.
The condenser sensor is used to protect the compressor against high pressure when the condenser is blocked or the condenser fan fails.
Condenser sensor Place the sensor at the liquid side of the condenser. Use a metal bracket or metal tape to ensure good thermal conductivity. Be sure that the cable does not pass hot spots at the compressor or condenser that exceeds 80°C.
© Danfoss | Climate Solutions | 2024.11

User Guide | ERC 112 Refrigeration Controller Ambient light sensor
Door sensor

The ambient light sensor is used to detect opening hours of the shop.
Placement of sensor The sensor must be placed so that the interior light does not affect the sensor. Possible placement could be in the front of the cooler or at the top.
The door sensor is used to detect buying activity and to stop the fan when the door is opened.
Door sensor Danfoss does not supply the door-switch. Use the door-switch you have and connect it to the cable supplied by Danfoss.

BC200686422115en-001201 | 29

BC200686422115en-001201 | 30

ADAP-KOOL®

Documents / Resources

Danfoss ERC 112 Electronic Refrigeration Controller [pdf] User Guide
ERC 112 Electronic Refrigeration Controller, ERC 112, Electronic Refrigeration Controller, Refrigeration Controller, Controller

References

User Manual

ERC 112 Electronic Refrigeration Controller

Specifications

Product Overview

Usage Instructions

Mounting and Installation

Sensors

Password Protection

FAQs

How do I change the password on the ERC 112?

Can the ERC 112 be used for glass door merchandisers?

Documents / Resources

References

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