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
Power surge
1). Initial power testing has completed.
Power off and restart (happens install with solar PV)
2). Replace Inverter board
Water inlet temp sensor failure
The water inlet temperature
sensor is either damaged or
running a short circuit
Check the Temperature sensor at the water inlet, might
need to be changed
Water outlet temp sensor failure
The water outlet temperature
sensor is either damaged or
running a short circuit
Check the Temperature sensor at the water outlet, might
need to be changed
Gas exhaust temp sensor failure
The sensor is running a short
circuit, damaged, or not fixed
properly
Check the gas exhaust Temperature sensor, might need
a replacement
Evaporator coil pipe temp sensor
failure
The sensor is running a short
circuit, damaged, or not fixed
properly
Check the evaporative coil pipe Temperature sensor,
might need a replacement
Gas return temp sensor failure
The sensor is running a short
circuit, damaged, or not fixed
properly
Check the Gas return Temperature sensor, might need a
replacement
Cooling coil pipe temp sensor failure
The sensor is running a short
circuit, damaged, or not fixed
properly
Check the cooling coil pipe Temperature sensor, might
need a replacement
Ambient temp sensor failure
The sensor is running a short
circuit, damaged, or not fixed
properly
Check the Ambient Temperature sensor, might need a
replacement
Cooling plate temp sensor failure
The sensor is running a short
circuit, damaged, or not fixed
properly
The sensor is running a short
circuit, damaged
1). Replace inverter board for single phase model
2). Replace power filter plate for 3 phases model
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