45
Protection & Failure Code
What did the error detect?
1. Check the water flow from the filtration pump and
ventilation clearances. 2. Check high pressure switch is
closed circuit 3. Replace PCB 4. replace inverter board
1. Check the water flow from the filtration pump and
ventilation clearances. 2. Check low pressure switch is
open circuit 3. Replace PCB 4. replace inverter board
Check the water flow in pipes, and filtration pump is
running. Check filters, skimmer basket, back wash
Check the bypass or valves have not been adjusted since
commissioned
Check the Water flow switch
3 phases sequence protection
Electrical power connection
Check the power connection to the pump
Power supply excesses operation
range (Not failure)
1). Recover when back to the normal power
2). Replace PCB
Excessive temp difference between
inlet and outlet water (Insufficient
waterflow protection)
High temperature difference
Check the water flow in pipes, and filtration pump is
running.
Check the bypass is opened and unit is commissioned
Check the Water flow switch
Water outlet temp too high or too
low protection
Check if there is any blockage in the inlets, outlets, and
through the pipe
High exhaust temp protection
Check if refrigerant gas is leaking, check the connection
of the sensor, might need to change if faulty, check the
compressor of the pump
Ambient temperature too high or
too low protection (not failure)
Out of the heat pump’s
capacity to withdraw heat from
the atmosphere
Anti-freezing reminder (not failure)
Wait for automatic recovery
Compressor drive module failure
Check the voltage and the frequency conversion
Check the PFC switch circuit if short or not
Check the compressor wiring if its correct or if there is
any short circuit
Compressor running failure
Check the compressor wiring if its correct or if there is
any short circuit
Inverter board over current
protection
1). Wiring
2). Inverter board
3). PCB
Inverter board overheat protection
Check the current flowing it might need to
1). Power off and restart
2). Inverter board
3). Compressor
Cooling plate overheat protection
1). Power off and restart
2). Check fan motor
3). Check cooling plate
Check the fan motor wiring, check if the fan is broken or
loose
Power filter plate No-power
protection
Single Phase Model
1). Replace Inverter board
3 Phases Model
1). Replace power filter plate
PFC module over current
protection
Solar inverter voltage change
Power black out
1). Initial power testing has completed.
Power off and restart (happens install with solar PV)