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INSTALLER

HIGH-TEMPERATURE ENERGY EFFICIENT HEAT PUMP

MANUAL

Display

Nature of error

Solutions

• check condition of filter valve: clean filter

• check that HP flow rate is sufficient

• check that heating circulator pump is operating correctly

• check that the HP outgoing water sensor is correctly connected to the heat pump electronic circuit board

• check the HP outgoing water sensor cable

• check the ohmic value of the heat pump outgoing water sensor

• replace the heat pump outgoing water sensor

• check that the HP incoming water sensor is correctly connected to the heat pump electronic circuit board

• check the HP incoming water sensor cable

• check the ohmic value of the heat pump incoming water sensor

• replace the heat pump incoming water sensor

• check the heat pump air temperature sensor and evaporator sensor are operating correctly

• check that the 4way valve is operating correctly

• check that the compressor starter is not faulty

• check that the evaporator sensor is not covered in ice

• check that power grid is adapted to the heat pump's electricity requirements
• check that the power supply voltage does not drop below 200W during start-ups
• check for errors on compressor 1 starter (see § "Compressor start-up errors")
• check power supply voltage

• check power connections from electrical box to compressor 1 terminals

• check compressor 1 discharge

sensor

• check power connections from electrical box to compressor 2 terminals

• check compressor 2

discharge

sensor

• check power connections from electrical box to compressor 1 terminals

• check power connections from electrical box to compressor 2 terminals

• check that the swimming pool sensor is correctly connected to the HRC Pilot electronic circuit board

• check the swimming pool sensor cable

• check the ohmic value of the swimming pool sensor

• replace swimming pool sensor

• check position of outdoor sensor

• check values on both sensors (outdoor and HP air temp.)

if one of the sensors is giving an erroneous reading, check condition of sensor

• check condition of cable and connections for each sensor

• replace defective sensor

• the water pressure in the heating circuit must be over 0.5 bars when cold.

• check that the heating circuit is watertight and repair any leaks.

• purge the air from the uppermost parts of the installation and the HRC Pilot.

• check that the heat pump pressure relief valve is watertight.

• check that the HRC Pilot pressure relief valve is watertight.

• check that the expansion vessel is big enough for the volume of the installation

• check that the fan is operating correctly (capacitor and electrical connections).
• check the condition of the finned heat exchanger surface and remove anything
which could be hampering the airflow through the rear grille (eg. leaves)
• if completely iced over, switch off the heat pump and let the ice melt. Spray with hot water if necessary.

• refrigerant leak, de-icing valve blocked or pressure reducing valve defect by a qualified professional

• check condition of filter valve

• check that heating network is properly purged

• check that HP circulator pump is running properly

• clean plated heat exchanger inlet

• discharge valve or 4-way valve malfunction

• check condition of filter valve

• check that heating network is properly purged

• check that HP circulator pump is running properly

• clean plated heat exchanger inlet

• discharge valve or 4-way valve malfunction

• check that the DHW sensor is correctly connected to the HRC Pilot electronic circuit board