Dimplex heat pump error codes

Heat pump blocked: current return flow temperature is lower than the set limit.

Heat pump blocked: in 'Bivalent-regenerative' mode the cylinder temperature is high enough to process all pending requests.

Heat pump blocked: with 'measure defrost' active the usual lowering of the flow temperature during defrosting did not occur.

Heat pump blocked: domestic hot water reheating via the 2nd heat generator is active.

Heat pump blocked: external temperature lower than -25C (or -15C) or higher than 35C.

Heat pump blocked: utility block (EVU) or bridge A1 (ID3-X2) has not been inserted.

Heat pump blocked: the flow rate switch of the primary or secondary side has not detected any flow rate.

Heat pump blocked: in 'Bivalent-alternative' mode the external temperature is below limit temperature HG2; 2nd heat generator released.

Heat pump blocked: current pressure value in the refrigerant circuit is above the permitted limit.

Heat pump blocked: a system control was activated in the special functions menu; deactivated automatically after 24 hours.

'Bus Initialising' (from software 1.17 'Network Refreshing'): the indoor wiring centre cannot find the outdoor unit on the communication (Modbus) network.

Extension N17.1: 'General cooling' extension module is not detected.

Extension N17.2: 'Active cooling' extension module not detected.

Extension N17.3: 'Passive cooling' extension module not detected.

Extension N17.4: 'Solar thermal system' extension module not detected.

Extension N17: 'Cooling' extension module not detected.

Electronic expansion valve not detected.

RTH room modulator Econ: reference room modulator not detected.

ODU extension: refrigeration circuit controller not detected.

Flow frost protection: the generator circuit pump M16 is switched on for frost protection and no flow is detected.

WPIO extension: refrigeration circuit controller not detected.

Refrigerant high pressure switch activated to protect the system.

Fault WQIF: the heat source module is not detected.

Compressor rotation failure detected.

No rotation detected by the outdoor fan motor(s).

Excessive current draw detected (overcurrent protection).

Primary circuit: fault caused by primary pump or fan motor protection.

Compressor overheating protection activated.

Brine pressure monitoring: the brine pressure monitor in the brine circuit has tripped.

Power transistor (IPM) overheating - system stopped to protect itself.

DC peak detection - system stopped to protect itself.

Coding: coding does not correspond to the heat pump type.

Low pressure: the heat source is producing insufficient energy.

Frost protection: the flow temperature in heating operating mode is below 7C.

High pressure: the heat pump has been switched off by the high pressure sensor or pressure switch.

Temperature difference: temperature difference between flow and return is too large (>12 K) or negative for defrosting.

Hot gas thermostat fault.

Flow: the heat pump has been switched off because there is no flow in the primary or secondary circuit.

Warm up: if the minimum oil temperature is not reached after 9 hours, the warm up error is triggered.

F43-F47 error messages are defrost errors (A-Class controller).

Mismatch of PCB fitted to the heat pump (capacity of refrigerant PCB and water PCB do not match).

Compressor temperature sensor abnormality.

Refrigerant liquid temperature sensor defective or disconnected.

Compressor low pressure abnormality.

Water flow fault: insufficient water flow between heat pump and house detected by the flow switch.

Refrigerant high pressure (sensor) abnormality.

Backup heater overload protection (OLP) activated or disconnected.

Hot water tank temperature sensor misreading.

Communication fault between indoor control screen and heat pump (remote control error).

Communication error between main water PCB and main fridge (refrigerant) PCB.

Hot water overheat sensor (tank booster heater OLP) activated, or cylinder mechanical temperature dial adjusted.

Supply voltage issue to the fridge (refrigerant) PCB.

Refrigerant high pressure overload protection.

Poor water flow during defrost (anti-freezing protection of indoor heat exchanger).

'No Link' on display: link between display screen and heat pump controller not established.

Room climate control station fault (silent cooling only): break or short-circuiting sensor in the room climate control station, or number of connected stations does not match the number set.

Function control: the control function has been activated by a user.

System control: the system control has been activated by a user for approx. 24 hours.

Delay operating mode switching: delay protects the heat pump from rapid temperature change when cooling and DHW are requested.

Pump flow: the heat pump starts after the set pump flow (pump forerun) has passed.

Minimum pause time: after it has elapsed the heat pump starts to meet pending requests; can last up to 5 minutes.

Line load: power-up line load delay required by utilities after voltage restoration or utility block; up to 200 seconds.

Switch cycle block: required by utility companies, can last up to 20 minutes (max 3 compressor starts per hour).

Domestic hot water reheating via the flange heater or pipe heater is active.

Renewable: in 'Bivalent-renewable' mode the cylinder temperature is high enough to process the pending request.

Utility block: a utility block is in place.

Soft starter: heat pump switch-off due to soft starter.

Flow: heat pump switched off because there is no flow in the primary or secondary circuit; message automatically reset after 4 minutes.

2nd heat generator: heat pump blocked because outside temperature too low; 2nd heat generator activated.

High pressure: the heat pump's permissible high pressure values have been exceeded.

Low pressure: pressure is below the heat pump's permissible low pressure values.

Operating limit: the heat source temperature is below the heat pump's operating limit.

4-way valve: the 4-way valve has not reset to its initial state after defrosting.

System limit: the system temperatures are too low for the heat pump to be operated.

Primary circuit load: heat pump disabled by the fan motor protection; restarts by itself.

Block external: system switched to blocking status by an external blocking signal at input ID4.

Warm up: compressor protection - heat pump blocked until minimum oil temperature is reached.

Electronic expansion valve initialisation: establishing communication with the EEV.

2nd heat generator operating mode selected: heat pump switched off, heat provided exclusively by 2nd heat generator.

Sensor fault (text-display WPM): breakage or short-circuit of a sensor. Depending on system type: return flow sensor, sensor limit value, hot water sensor, flow sensor, 2nd/3rd heating circuit sensor, external sensor, room temperature sensor, additional return flow sensor, hot gas sensor, high-pressure sensor, low-pressure sensor (and indoor air temperature sensor on WPM 2006 plus).