21
4.2 I Error code display
Display
Possible causes
Solutions
P1
Faulty inlet water temperature sensor
Sensor disconnected or out of order.
Reconnect or replace the sensor.
P2
Faulty outlet water temperature sensor
Sensor disconnected or out of order.
Reconnect or replace the sensor.
P3
Faulty coil temperature sensor
Sensor disconnected or out of order.
Reconnect or replace the sensor.
P5
Faulty ambient temperature sensor
Sensor disconnected or out of order.
Reconnect or replace the sensor.
P7
Winter frost protection
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E1
High-pressure protection
High-pressure sensor broken.
Replace the high-pressure sensor.
Water circuit obstructed or
insufficient flow.
Remove the obstruction or increase
the water flow rate.
Cooling circuit obstructed.
Send the pump to the retailer for a
detailed inspection.
E2
Low-pressure protection
Low-pressure sensor broken.
Replace the low-pressure sensor.
Insufficient refrigerant level.
Add refrigerant.
Ambient temperature and inlet water
temperature too low.
Send the pump to the retailer for a
detailed inspection.
E3
Faulty water flowmeter
Flowmeter incorrectly positioned.
Re-make the connections.
Insufficient water flow.
Increase the water flow rate.
Broken flowmeter.
Replace the flowmeter.
Faulty filter pump.
Repair or replace the filter pump.
E4
Incorrect phase lead connection (three-
phase model only)
Incorrect phase lead connection.
Connect the phase leads in the
right order.
E8
Faulty communication
Incorrect connection.
Re-make the connections.
E12
Outlet water temperature too low
protection
Obstructed water circuit.
Remove the obstruction.
Insufficient water flow.
Increase the water flow rate.
Faulty filter pump.
Repair or replace the filter pump.
E13
Outlet water temperature overheating
protection
Obstructed water circuit.
Remove the obstruction.
Insufficient water flow.
Increase the water flow rate.
Faulty filter pump.
Repair or replace the filter pump.
E14
Protection against an excessive
temperature difference between the water
inlet and outlet
Obstructed water circuit.
Remove the obstruction.
Insufficient water flow.
Increase the water flow rate.
Faulty filter pump.
Repair or replace the filter pump.
EN
Summary of Contents for PM40 Series
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