19
EE02
Low pressure protection
Low-pressure sensor broken.
Replace the low-pressure sensor.
Insufficient level of refrigerant.
Add refrigerant.
Ambient temperature and input
water temperature too low.
Send the pump to the retailer for a
detailed inspection.
EE03
Water flow rate protection
Flow switch incorrectly positioned.
Re-make the connections.
Insufficient water flow.
Increase the water flow rate.
Broken flow switch.
Replace the flow switch.
Faulty filter pump.
Repair or replace the filter pump.
EE04
In heating mode, temperature
overheating error
In heating mode, temperature
overheating error.
Check that the flow rate is sufficient.
Faulty flow switch.
Replace the flow switch.
Abnormal d2-TH5 sensor reading.
Replace the d2-TH5 sensor.
EE05
d6-TH3 exhaust temperature protection
Insufficient refrigerant.
Check for the presence of gas
leaks and add refrigerant.
Insufficient water flow rate.
Check the by-pass valve.
Clogged filter or electronic valve.
Check refrigerant levels.
d6-TH3 sensor fault.
Check the d6-TH3 sensor.
EE06
Controller fault
The connection is faulty.
Check the connection.
Replace the cable.
The controller is faulty.
Replace the controller.
EE07
Compressor protection
The connection is faulty.
Check the connection.
Accumulation of liquid and gas.
Check the power supply voltages
Faulty compressor or printed circuit
board.
Check the phases.
Abnormal water flow rate.
Check the water flow rate.
Fluctuating power supply.
Check the electrical grid.
EE08
Communication error between the
controller and the power board
The connection is faulty.
Check the connection.
Replace the cable.
The controller is faulty.
Replace the controller.
EE09
Communication error between the
controller and the control board.
The connection is faulty.
Check the connection.
Replace the cable.
The controller is faulty.
Replace the controller.
EE10
High voltage protection
Voltage too high.
Check the voltage.
Faulty power board.
Replace the power board and/or
control board.
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