Argo Control Panel User Manual
This document provides instructions for the control panel of an air to water inverter heat pump manufactured by Argo.
Contents
- 1 - Presentation of Control Elements
- 2 - Operation
- 3 - Settings
- 4 - Graphs
1 - Presentation of Control Elements
Control Panel Buttons
- BUTTON ON/OFF - Back to the previous menu
- BUTTON UP - Increase value / Navigate up
- BUTTON DOWN - Decrease value / Navigate down
- SET - Settings button / Confirm selection
Display - Main Screen with Unit Switched On
The display shows the current operating status:
- ON: HEAT PUMP IN OPERATION
- OFF: HEAT PUMP STOPPED
- BLINKING: HEAT PUMP IS STARTING
The control panel also displays:
- RETURN WATER TEMPERATURE (e.g., 35.0°C)
- RETURN WATER SETPOINT (e.g., [35.0°C])
Additional status indicators:
- ON: PUMP IN OPERATION
- OFF: PUMP STOPPED
- ON: BACKUP HEATING ACTIVE
- OFF: BACKUP HEATING NOT ACTIVE
- ON: "ECO" OPERATION ACTIVE
- OFF: "ECO" OPERATION NOT ACTIVE
2 - Operation
2.1 - Switching the Unit On/Off
When the unit is powered, a default screen appears showing dashes.
To turn the unit on, press and hold the [power button] (⏻) for 3 seconds. Two screens will appear sequentially, showing the unit model and software version, then the main operating screen.
To turn the unit off, press and hold the [power button] (⏻) for 3 seconds. Two screens will appear sequentially, indicating the unit is powering down.
Note: After the unit is switched off, the water pump may continue to operate to prevent frost in the pipes.
2.2 - Setpoint Modification (Return Water to the Unit)
If the fixed setpoint is selected (P05 = 1), the setpoint can be adjusted manually. Press the UP (▲) or DOWN (▼) buttons until the desired setpoint is displayed on the second line.
2.3 - Keyboard Locked / Unlocked
To lock the keyboard and prevent accidental button presses, press the UP (▲) and DOWN (▼) buttons simultaneously for 3 seconds. The display will show "KEYBOARD LOCKED".
To unlock, repeat the same operation. The display will show "KEYBOARD UNLOCKED".
2.4 - Defrost
During defrost cycles, the display will show the return water temperature on the first line and "DEFROST" on the second line.
3 - Settings
3.1 - User Parameters Setting - Level 1
Press the SET button to enter menu level 1. Parameters can be selected and modified using the UP (▲) and DOWN (▼) buttons, and confirmed with the SET button. Pressing the [back button] (⏻) returns to the previous menu.
| Name | Description | Notes |
|---|---|---|
| Pump Speed selection | Select the water pump speed and read back the corresponding water flow. | Once desired speed is selected, press [power button] (⏻) to confirm. |
| Water flow | Water flow level bar. | RWT, SWT, OAT, Water Flow, Pump Speed. |
| Sensors reading | List of main sensors reading. | Selection available only if P14 = 1. See parameter P04. |
| Working mode selection | HEAT: heating mode selected; COOL: cooling mode selected. | Hold [power button] (⏻) for 5 seconds to delete the list (possible only if P07 = 1). |
| Error List | List of last 10 errors. | See parameter P08. |
| Language selection | 0= French, 1= English, 2= Italian. |
3.2 - Authorized Service Center Parameters Setting - Level 2
Press and hold the SET button for 3 seconds to enter menu level 2. Parameters can be modified by navigating with UP (▲) and DOWN (▼) buttons and confirming with SET. A password may be required to access the parameter list.
Legend of Acronyms:
- DHW: DOMESTIC HOT WATER
- RWT: RETURN WATER TEMPERATURE
- SWT: SUPPLY WATER TEMPERATURE
- OAT: OUTDOOR AIR TEMPERATURE
- ICT1: OUTLET (HEAT) / INLET (COOL) HEAT EXCHANGER (PLATE-TYPE)
- ICT2: INLET (HEAT) / OUTLET (COOL) HEAT EXCHANGER (PLATE-TYPE)
- OCT: OUTDOOR COIL TEMPERATURE
- CDT: COMPRESSOR DISCHARGE TEMPERATURE
- CTST: COMPRESSOR TOP SHELL TEMPERATURE
- ICP: CONDENSING PRESSURE (HEAT) / EVAPORATING PRESSURE (COOL)
- C/E: CONDENSING TEMPERATURE (HEAT) / EVAPORATING TEMPERATURE (COOL)
3.2.1 - Setting of General Parameters
| Num. | Description | Unit | Default value | Range | Increment | Value description | Notes | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Floor | Fan coils | Radiators | Min. | Max. | ||||||||
| Sensors reading | Read only | RWT - SWT - OAT - C/E - ICT1 - ICT2 - OCT CDT - CTST - ICP Water flow Pump speed Fan speed | List of all the sensors' values | See graph "ON/OFF HYSTERESIS" | ||||||
| P02 | On-Off hysteresis | °C | 1.5 | 1.5 | 1.5 | 0.5 | 10 | 0.5 | Hysteresis of heat pump restart on the return water temperature | |
| P03 | Water pump mode | - | Auto (0) | Auto (0) | Auto (0) | Auto (0) | ON (1) | 1 | AUTO= Auto mode; ON= Water pump always ON | |
| P04 | Working mode | - | Heat (0) | Heat (0) | Heat (0) | Heat (0) | Cool (1) | 1 | HEAT= heating mode selected; COOL= cooling mode selected | Selection available only if P14 = 1 |
| P05 | Setpoint mode | - | 0 | 0 | 0 | 0 | 1 | 1 | 0= Automatic setpoint (climatic curve); 1= Fixed setpoint (user selection) | In 2-zones application, if auto mode is selected the warmest (heating mode) or the coldest (cooling mode) setpoint is selected. |
| P06 | Secondary water pump | - | 0 | 0 | 0 | 0 | 1 | 1 | 0= Unit pump only; 1= Secondary pump installed (primary/secondary circuit) | |
| P07 | Error list reset enable | - | 0 | 0 | 0 | 0 | 1 | 1 | 0= Error list reset forbidden; 1= Error list reset allowed | If P07 = 1 go to the error list and hold the [power button] (⏻) for 5 seconds to clear the list. |
| P08 | Language | - | English (1) | English (1) | English (1) | 0 | 2 | 1 | 0= French; 1= English; 2= Italian | See parameter P08. |
| P09 | Backup heating mode | - | 0 | 0 | 0 | 0 | 3 | 1 | 0= Backup heating disabled; 1= External backup heating enabled; 2= Internal backup heating enabled; 3= External + Internal backup heating enabled | Values 2 and 3 are valid only for units equipped with backup heating. |
| P10 | Backup heating delay | Min. | 20 | 20 | 20 | 5 | 120 | 1 | Time of heat pump functioning before backup heating activation | Valid only if P40 < OAT < P12. See graph "OPERATING RANGE OF HEAT PUMP/BACKUP HEATING". |
| P11 | Boost mode | - | 0 | 0 | 0 | 0 | 1 | 1 | 0= Boost mode disabled; 1= Boost mode activated | If P11 = 1, backup heating (according to P09) will be immediately activated up to the setpoint, then P11 is automatically reset to 0. See graph "OPERATING RANGE OF HEAT PUMP/BACKUP HEATING". |
| P12 | Backup heating threshold | °C | 0 | 0 | 0 | P40 | +35 | 1 | Heating mode: OAT > P12: backup heating disabled; OAT < P12: backup heating enabled | See graph "OPERATING RANGE OF HEAT PUMP/BACKUP HEATING". |
| P13 | DHW valve delay | Sec. | 15 | 15 | 15 | 15 | 300 | 5 | Time to move the DHW valve from one position to the other. | |
| P14 | Working mode selection | - | 0 | 0 | 0 | 0 | 1 | 1 | 0= Working mode selected by thermostat; 1= Working mode selected with P04 | |
| P20 | Alarm contact function | - | 0 | 0 | 0 | 0 | 6 | 1 | 0= Alarm; 1= Defrost; 2= Alarm or defrost; 3= DHW; 4= Alarm or DHW; 5= Defrost or DHW; 6= Alarm o defrost or DHW | |
| P21 | DHW contact function | - | 0 | 0 | 0 | 0 | 1 | 1 | 0= DHW; 1= Secondary setpoint | If P21= 0, when DHW contact is closed the unit will automatically manage the DHW production. If P21 = 1, when DHW contact is closed the unit will use the secondary setpoint P22 (heating only). Setpoint used if P21 = 1 and DHW contact is closed. |
| P22 | Secondary setpoint | °C | 50 | 50 | 50 | 20 | 58 | 0.5 | See graph "CLIMATIC CURVE". | |
| P23 | Maximum DHW production time | h | 5 | 5 | 5 | 1 | 24 | 1 | Minimum system heating time after DHW production. | If OAT < P31, antifreeze function is activated in order to avoid water freezing in the pipings. Valid if there is a system request. See graph "ANTIFREEZE FUNCTION". |
| P30 | Minimum heating time of the system | Min. | 60 | 60 | 60 | 10 | 120 | 5 | See graph "ANTIFREEZE FUNCTION". | |
| P31 | Antifreeze function threshold | °C | 1 | 1 | 1 | -20 | +35 | 1 | ||
| P32 | Antifreeze threshold (P31) hysteresis | °C | 1 | 1 | 1 | 1 | 5 | 0.5 | Hysteresis on P31 | If water flow drops below P33, water flow error will appear and the unit will stop. See graph "OPERATING RANGE OF HEAT PUMP/BACKUP HEATING". |
| P33 | Minimum water flow | m³/h | 0.3 | 0.4 | 0.4 | 0.3 | 4.0 | 0.1 | Minimum water flow threshold | See graph "RETURN WATER MINIMUM TEMPERATURE PROTECTION". |
| P40 | Heat pump threshold | °C | -20 | -20 | -20 | -20 | P12 | 1 | Heating mode: OAT < P40: heat pump disabled; OAT > P40: heat pump enabled | See graph "OPERATING RANGE OF HEAT PUMP/BACKUP HEATING". |
| P41 | Defrost | - | 0 | 0 | 0 | 0 | 1 | 1 | If P41 is set to 1 and unit is running in heating mode, a defrost will start. At the end of defrost cycle P41 is automatically reset to 0. | |
| P50 | Factory default reset | - | 0 | 0 | 0 | 0 | 1 | 1 | If P50 is set to 1, all parameters will be reset to the default value. After the reset has been done, P50 is automatically reset to 0. | |
| P51 | Maximum heat pump setpoint | °C | 58 | 58 | 58 | 20 | 58 | 0.5 | Maximum setpoint for the heat pump. If calculated setpoint is > P51, heat pump will stop when P51 is reached and setpoint can only be reached with backup heating (if enabled). | |
| P52 | Return water minimum temperature | °C | 15 | 15 | 15 | 5 | 20 | 1 | Heating mode: RWT < P52: heat pump disabled and backup heating activated. RWT > P52: heat pump enabled. | See graph "RETURN WATER MINIMUM TEMPERATURE PROTECTION". |
| P53 | Special command | - | 0 | 0 | 0 | 0 | 999 | 1 | 0= Special command disabled; 1= Air purge function activation | |
| P60 | Eco mode power limit | % | 75 | 75 | 75 | 30 | 100 | 1 | ECO: maximum efficiency; FAST: maximum yield; AUTO: ECO if ON/OFF contact is open, FAST if ON/OFF contact is closed. | |
| P61 | Eco mode enable | - | 1 | 1 | 1 | 0 | 1 | 1 | 0= Eco mode command disabled; 1= Eco mode command enabled | |
| P62 | DHW mode | - | 0 | 0 | 0 | 0 | 2 | 1 | 0= ECO; 1= AUTO; 2= FAST | |
3.2.2 - Setting of Single Zone or Zone 1
To set the single zone or zone 1, use parameters from P101 to P161.
| Num. | Description | Unit | Default value | Range | Increment | Value description | Notes | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Floor | Fan coils | Radiators | Min. | Max. | ||||||||
| P101 | Plant type (single zone or zone 1) | - | 0 | 0 | 2 | 1 | 0 = Underfloor; 1 = Fan coil; 2 = Low temperature radiators | When P101 is changed, P105 / P106 / P120 / P121 / P123 are reset to the corresponding default value. | ||
| P105 | Maximum climatic curve setpoint (single zone or zone 1) | °C | 35 | 45 | 50 | 30 | 55 | 0.5 | Only for heating mode | See graph "CLIMATIC CURVE". |
| P106 | Minimum climatic curve setpoint (single zone or zone 1) | °C | 20 | 35 | 40 | 20 | 40 | 0.5 | See graph "CLIMATIC CURVE". | Set to the minimum expected regional temperature. See graph "CLIMATIC CURVE". |
| P120 | Temperature for maximum setpoint (single zone or zone 1) | °C | -7 | -7 | -7 | -20 | P121 | 0.5 | If P121 < P120, P120 is automatically set to P121. See graph "CLIMATIC CURVE". | |
| P121 | Temperature for minimum setpoint (single zone or zone 1) | °C | 17 | 17 | 17 | P120 | +35 | 0.5 | In cooling mode the setpoint is fixed and it corresponds to P123. | |
| P123 | Cooling setpoint (single zone or zone 1) | °C | 23 | 12 | 10 | 30 | 0.5 | |||
| P130 | Calculated setpoint (single zone or zone 1) | °C | Read only | |||||||
| P131 | Lowest cooling setpoint with 0-10V control (single zone or zone 1) | °C | 23 | 12 | 10 | P132 | 0.5 | Active only if P150 = 1, it corresponds to a signal of 10V. See graph "0-10V CONTROL". | ||
| P132 | Highest cooling setpoint with 0-10V control (single zone or zone 1) | °C | 30 | 30 | 30 | P131 | 0.5 | Active only if P150 = 1, it corresponds to a signal of 0V. If P132 < P131, P132 is automatically set to P131. See graph "0-10V CONTROL". | ||
| P150 | 0-10V signal function (single zone or zone 1) | - | 0 | 0 | 4 | 1 | 0 = Disabled; 1 = Thermal load; 2 = Setpoint command; 3 = Thermal load on outdoor unit; 4 = Setpoint command on outdoor unit | If P150 = 3 or 4, 0-10V signal is read on outdoor unit only and signals on zone 1 and 2 will be ignored. See graph "0-10V CONTROL". | ||
| P151 | Maximum 0-10V setpoint shift | °C | 5 | 5 | 5 | 1 | 10 | 0.5 | Active only in heating mode and if P150 = 1. It represents the shift on the setpoint with a signal of 10V. (See graph "0-10V CONTROL") | |
| P152 | Manual setpoint shift | °C | 0 | 0 | 0 | 0 | 10 | 0.5 | Climatic curve manual setpoint shift in heating mode. | |
| P160 | Mixing valve delay | sec | 60 | 60 | 60 | 30 | 300 | 5 | ||
| P161 | Mixing valve control type | - | 0 | 0 | 1 | 1 | 0 = 230 Vac control (2 or 3 points); 1 = 0-10V control | Active only in heating mode and if P150 = 1. It represents the shift on the setpoint with a signal of 10V. (See graph "0-10V CONTROL") | ||
3.2.3 - Setting of Zone 2
To set zone 2, use parameters from P201 to P261.
| Num. | Description | Unit | Default value | Range | Increment | Value description | Notes | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Floor | Fan coils | Radiators | Min. | Max. | ||||||||
| P201 | Plant type (zone 2) | - | 0 | 0 | 2 | 1 | 0 = Underfloor; 1 = Fan coil; 2 = Low temperature radiators | When P201 is changed, P205 / P206 / P220 / P221 / P223 are reset to the corresponding default value. | ||
| P205 | Maximum climatic curve setpoint (zone 2) | °C | 35 | 45 | 50 | 30 | 55 | 0.5 | Only for heating mode | See graph "CLIMATIC CURVE". |
| P206 | Minimum climatic curve setpoint (zone 2) | °C | 20 | 35 | 40 | 20 | 40 | 0.5 | See graph "CLIMATIC CURVE". | Set to the minimum expected regional temperature. See graph "CLIMATIC CURVE". |
| P220 | Temperature for maximum setpoint (zone 2) | °C | -7 | -7 | -7 | -20 | P221 | 0.5 | If P221 < P220, P220 is automatically set to P221. See graph "CLIMATIC CURVE". | |
| P221 | Temperature for minimum setpoint (zone 2) | °C | 17 | 17 | 17 | P220 | +35 | 0.5 | In cooling mode the setpoint is fixed and it corresponds to P223. | |
| P223 | Cooling setpoint (zone 2) | °C | 23 | 12 | 10 | 30 | 0.5 | |||
| P230 | Calculated setpoint (zone 2) | °C | Read only | |||||||
| P231 | Lowest cooling setpoint with 0-10V control (zone 2) | °C | 23 | 12 | 10 | P232 | 0.5 | Active only if P250 = 1, it corresponds to a signal of 10V. See graph "0-10V CONTROL". | ||
| P232 | Highest cooling setpoint with 0-10V control (zone 2) | °C | 30 | 30 | 30 | P231 | 0.5 | Active only if P250 = 1, it corresponds to a signal of 0V. If P232 < P231, P232 is automatically set to P231. See graph "0-10V CONTROL". | ||
| P250 | 0-10V signal function (zone 2) | - | 0 | 0 | 2 | 1 | 0 = Disabled; 1 = Thermal load; 2 = Setpoint command | If P250 = 3 or 4, 0-10V signal is read on outdoor unit only and signals on zone 1 and 2 will be ignored. See graph "0-10V CONTROL". | ||
| P251 | Maximum 0-10V setpoint shift | °C | 5 | 5 | 5 | 1 | 10 | 0.5 | Active only in heating mode and if P250 = 1. It represents the shift on the setpoint with a signal of 10V. (See graph "0-10V CONTROL") | |
| P252 | Manual setpoint shift | °C | 0 | 0 | 0 | 0 | 10 | 0.5 | Climatic curve manual setpoint shift in heating mode. | |
| P260 | Mixing valve delay | sec | 60 | 60 | 60 | 30 | 300 | 5 | ||
| P261 | Mixing valve control type | - | 0 | 0 | 1 | 1 | 0 = 230 Vac control (2 or 3 points); 1 = 0-10V control | Active only in heating mode and if P250 = 1. It represents the shift on the setpoint with a signal of 10V. (See graph "0-10V CONTROL") | ||
4 - Graphs
4.1 - ON/OFF Hysteresis
This graph illustrates the hysteresis band for heat pump operation. In heating mode, the heat pump turns ON at P02 and OFF at a slightly lower temperature. In cooling mode, it turns OFF at P02 and ON at a slightly lower temperature. The setpoint is indicated by P130.
4.2 - Operating Range of Heat Pump/Backup Heating
This graph shows the operational zones based on outdoor air temperature (OAT). The x-axis represents OAT, with thresholds at P40 (-20°C) and P12 (0°C). The graph depicts ranges for "Backup heating only", "Heat pump + backup heating", and "Heat pump only".
Note: Heat pump operation is prevented if OAT is below the stop threshold (P40). Only backup heating is authorized in this condition.
4.3 - Climatic Curve (Heating Mode)
This graph illustrates the relationship between return water setpoint and outdoor air temperature for heating mode. The curve is defined by parameters like P105 (maximum setpoint), P106 (minimum setpoint), P120, P121, and P130 (setpoint).
4.4 - Antifreeze Function
This diagram shows the conditions for activating the antifreeze function. The function is activated below P31 and deactivated above P32. When active, the unit may enter a forced function for water heating or operate normally, depending on the return water temperature (RWT).
4.5 - 0-10V Control
These graphs illustrate how a 0-10V signal can influence the heat pump's setpoint. The "Thermal load" graph (P150 = 1) shows how the setpoint (P130) is adjusted based on the 0-10V signal and parameters P151 and P106. The "Setpoint command" graph (P150 = 2) shows a linear relationship between the 0-10V signal and the return water setpoint for heating and cooling modes, defined by parameters like P105, P106, P131, and P132.
Example: If P151 = 5°C and the 0-10V signal is 6V (60%), the adjustment (Z) is 5°C * 60% = 3°C.
Note: Graphs for zone 1 apply similarly to zone 2 with corresponding parameters.
4.6 - Return Water Minimum Temperature Protection
This graph illustrates the return water minimum temperature protection. If the return water temperature (RWT) drops below P52 (default 15°C), the heat pump is disabled, and backup heating is activated. If RWT is above P52, the heat pump is enabled.
Note: This safety feature prevents the heat pump from operating if the return water temperature is below the heating authorization threshold (P52). If backup heating is not installed (P09 = 0), this protection is inactive. The display will show "RWT < P52" when the heat pump stops due to this condition.
Argoclima S.p.A.
