ESP Varimax I ASHP, Installation And Operation Manual

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PASRW040-D-BP
winter. Please NOTE THE FOLLOWING – failure to observe the following
requirements WILL invalid the warranty for the heat pump.
Please do not shut off the power supply to the heat pump in winter unless it is to
be drained-down. When the air temperature is below 0°C, if the inlet water
temperature is above 2°C and below 4°c, the water pump will start automatically
once in every 72 hrs to provide frost protection
.
12.0 Troubleshooting
12.1 Error Codes
The unit controller has the capability to identify problems within the unit
and/or system and you should take note of any ‘Error’ codes displayed.
The following table will aid fault diagnosis:
Malfunction
Display
Reason Resolution
Inlet probe error
or not connected
P1
The sensor is open
or short circuit
Check or change the
sensor
Outlet probe 1
error or not
connected
P2
The sensor is open
or short circuit
Check or change the
sensor
Outlet probe 2
error or not
connected
P3
The sensor is open
or short circuit
Check or change the
sensor
Discharge probe
error or not
connected
P4
The sensor is open
or short circuit
Check or change the
sensor
Condenser probe
1 error or not
connected
P5
The sensor is open
or short circuit
Check or change the
sensor
Condenser probe
2 error or not
connected
P6
The sensor is open
or short circuit
Check or change the
sensor
External probe
error or not
connected
P7
The sensor is open
or short circuit
Check or change the
sensor
Water flow alarm
E1
Water flow rate is
inadequate
Check the water flow
volume, and flow
switch operation
Inverter
compressor low
pressure alarm
L1
Low pressure
switch action
Check through each
pressure switch and
return circuit
Inverter
compressor high
pressure alarm
H1
High pressure
switch action
Check through each
pressure switch and
return circuit