AKO D141H232 Digital Thermostat Installation and Operation Guide

1- Warnings

Failure to comply with the manufacturer's instructions may lead to safety problems with the device. Only probes supplied by AKO should be used to ensure the correct operation of the device.

This unit must be installed protected from vibration, water, and corrosive gases, and from locations outside the ambient temperatures specified in the technical data.

The probe should not be placed in the same environment as any external heater to ensure accurate readings, other than the measured or controlled temperature.

The power supply circuit must be supported by a main switch with a range of at least 2 A, 230 V, and should be located near the equipment. Cables should come from the rear and be of type H05VV-F or H05V-K.

The diameter must be adjusted according to local instructions, but in no case less than 1 mm².

Relay contact connection cables must be 2.5 mm².

Between -40 °C and +20 °C, if the NTC probe is extended up to 1,000m with a minimum 0.5 mm² cable, the maximum deviation is 0.25 °C. (Additional cable for AKO-15586 ref. probe)

NOTE: The equipment is not compatible with AKO-14917 (external communication module) and AKO-14918 (programming key).

2- Installation

The installation of the probe and its cables must NEVER be done in the same cable duct as power, control, or welding cables.

Wiring Diagrams

AKO-D14112 (COLD Mode)

Shows connections for AKO-D14112 with COLD mode, including terminals for power (LN), relay outputs (R. CRANKCASE), and probe inputs (S1, S2).

AKO-D14112 (HEAT Mode)

Shows connections for AKO-D14112 with HEAT mode, including terminals for power (LN), relay outputs (RES), and probe inputs (S1, S2).

AKO-D1412x-2

Shows connections for AKO-D1412x-2 models (120V/230V), including terminals for power (LN), relay outputs (COOL, RES), and probe inputs (S1, S2).

AKO-D143xx

Shows general wiring for AKO-D143xx series, indicating terminals for power (LN), relay outputs (AUX, FAN, COOL), and probe inputs (S1, S2).

AKO-D142xx

Shows general wiring for AKO-D142xx series, indicating terminals for power (LN), relay outputs (AUX, COOL), and probe inputs (S1, S2).

AKO-D14312

Shows connections for AKO-D14312, including terminals for power (LN), relay output (R. CRANKCASE), and probe inputs (S1, S2).

AKO-D14212

Shows connections for AKO-D14212, including terminals for power (LN), relay outputs (AUX, COOL), and probe inputs (S1, S2).

3- Connections

The installation of the probe and its cables must NEVER be done in the same cable duct as power, control, or welding cables.

4- Operation

Program Mode

The device starts in wizard mode upon power-up (P3/1 signal). Press ▲ or ▼ to select the most suitable application, then press SET. The wizard configures the device's parameters for the selected application (refer to "default application settings").

ESC Key: Press and hold for 2 seconds to return the equipment to normal mode. In stand-by mode, the equipment does not operate and only the 'm' indicator is displayed.

SET Key: Press and hold for 5 seconds to access the setpoint. Press and hold for 10 seconds to access the programming menu.

UP Key /: Allows you to go to the displayed level in the programming menu or confirm a new value when adjusting a parameter.

SET Key: Allows you to change the setpoint (SP) by pressing and holding for 5 seconds. Allows you to access the programming menu by pressing and holding for 10 seconds.

Program Menu (parameters): The programming menu allows you to go to the displayed level or confirm a new value when adjusting a parameter.

DEF Key: Press and hold for 5 seconds to start/stop defrost. Press and hold for 5 seconds to start/stop fast cooling mode.

Standby Mode: The equipment does not operate and only the 'm' indicator is displayed.

Fast Cooling Mode: Press and hold the DEF key for 5 seconds to start/stop fast cooling mode.

ECO Relay ON

COOL Relay ON (P0=0)

RES Relay ON (P0=1)

AUX Relay ON (P6=3)

DEF Relay ON

Fast Cooling Mode Start/Stop: Press and hold the DEF key for 5 seconds.

Standby Mode: The equipment does not operate and only the 'm' indicator is displayed.

Programming Menu Navigation: The programming menu allows you to navigate through different levels or change a value when adjusting a parameter.

ESC Key: Returns to the previous level without saving parameters or exits programming.

UP Key /: Allows navigation through levels and changing values.

SET Key: Confirms value and exits.

Program Exit: Returns to Level 1. Go back one level without saving changes.

4.1- Accessing Setpoint and Programming

Changing the Setpoint (SP): Press and hold the SET key for 5 seconds to display the setpoint. Use ▲ or ▼ to change the value, then press SET to confirm.

Accessing Programming Menu: Press and hold the SET key for 10 seconds to access the programming menu.

Parameter Menu (parameters): The programming menu allows you to go to the displayed level or confirm a new value when adjusting a parameter.

Navigation: Use the UP key (▲) to move between levels and parameters. Use the SET key to confirm values.

Saving Changes: Press SET to confirm and exit. Press ESC to exit without saving.

Default Application Settings (P3): The wizard configures parameters based on the selected application.

Display Indicators:

SP: Setpoint
Temperature Indicator: Displays the current temperature.
SET: Accesses setpoint adjustment.
Program: Accesses programming menu.
ESC: Exits programming or returns to previous level.
DEF: Activates/deactivates defrost or fast cooling.
AUX: Auxiliary relay status.
RES: Resistance relay status.
COOL: Cooling relay status.
ECO: ECO mode status.
Standby: Standby mode indicator.

5- Messages

Code	Description
A1	Maximum temperature alarm on Probe 1 (flashing)
A2	Maximum temperature alarm on Probe 1 (flashing)
d:	Displays messages on the screen.
DEF	Defrost cycle active.
E1	Probe 1 error.
E2	Probe 2 error.
E3	Probe 1 and 2 error.
OP	Door open alarm.
AL	General alarm.
HA	Severe external alarm.
EA	External alarm.
DF	Defrost time overflow alarm.

6- Parameter Tables and Messages

This section details various parameters (P1-P12, C1-C12, A1-A12, F1-F12, etc.) and their corresponding functions, default values, and ranges. These parameters control the thermostat's behavior, including temperature settings, defrost cycles, alarms, and input/output configurations.

Example Parameters:

P1: Temperature Setting (Setpoint): Sets the desired operating temperature.
P2: Upper Blocking Setpoint: Sets the maximum allowable temperature.
P3: Lower Blocking Setpoint: Sets the minimum allowable temperature.
C1: Defrost Frequency: Determines how often defrost cycles occur.
C2: Defrost Duration: Sets the length of each defrost cycle.
A1: Probe 1 Maximum Temperature Alarm: Configures the upper temperature alarm threshold for Probe 1.
F1: Input Type Selection: Selects the type of input signals (e.g., number of probes, digital inputs).
P4: Application Type Selection: Allows selection of pre-defined application settings.
P10/P11: Digital Input Signal Configuration: Configures the behavior of digital inputs for external alarms or ECO mode.

Messages:

D: Display Messages: Shows various status and alarm messages.
DEF: Defrost Active: Indicates that a defrost cycle is in progress.
E1/E2/E3: Probe Errors: Signal issues with the temperature probes.
OP: Door Open Alarm: Alerts if the door is left open.
AL: General Alarm: Indicates a general system alarm.
HA: Severe External Alarm: Signals a critical external alarm condition.
EA: External Alarm: Indicates an external alarm event.
DF: Defrost Time Overflow Alarm: Alerts if a defrost cycle exceeds its maximum duration.

Default Application Settings (P3): This table outlines the default parameter values for various applications such as "Multipurpose", "Frozen", "Fruits and Vegetables", "Fresh Fish", "Non-alcoholic Drinks", "AC", and "Heat/Incubator".

Application	P1 (SP)	P2	P3
Multipurpose	2.5	10	0
Frozen	-18	-10	0
Fruits and Vegetables	10	15	0
Fresh Fish	2	5	0
Non-alcoholic Drinks	4	8	0
AC	25	30	0
Heat/Incubator	35	40	1

7- Technical Specifications

Measurement Range NTC: -50.0 ºC to +99.9 ºC (-58.0 ºF to 211 ºF)
Measurement Range PTC: -50.0 ºC to +150 ºC (-58.0 ºF to 302 ºF)
Resolution: 0.1 ºC
Protection Class - Front Panel: IP65
Input Voltage: 12V, 24V, 120V~50/60 Hz, 230V~50/60 Hz (depending on model)
Relay Outputs: Various ratings up to 16A, 6A, 8A depending on model and function (COOL, RES, AUX, FAN, DEF).
Digital Inputs: Configurable for probe 1 + 2 digital inputs, or 2 probes + 1 digital input.
Communication Module Compatibility: Not compatible with AKO-14917 and AKO-14918.

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