Swimming pool heat pump
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18. PCB I/O Ports description
19. Troubleshooting
There will be malfunction code showing on the controller screen when relative malfunction
occurs.
Code Failure Reason Solution
P01 Water inlet temp. sensor failure Temp. Sensor is broken Check or change it
P02 Water outlet temp. sensor failure Temp. Sensor is broken Check or change it
P04 Ambient temp. sensor failure Temp. Sensor is broken Check or change it
P05 Coil temp. sensor failure Temp. Sensor is broken Check or change it
P07 Suction temp. sensor 1 failure Temp. Sensor is broken Check or change it
E01 High pressure protection (HP) HP switch is broken Check or change it
E02 Low pressure protection (LP) LP switch is broken Check or change it
E03 Water flow protection Flow switch is broken Check or change it
E06 Temp. Difference between inlet
and outlet
Temp. Difference>13℃ Temp. Difference<13℃, power
off
E07 Antifreezing protection
Antifreezing temp. <2℃
Check flow and water system
E19 Primary Antifreezing protection Ambient temp. is too low /
E29 Secondary Antifreezing protection Ambient temp. is too low /
E08 Communication failure Communication failure between wire
controller and main board
Check the connection between
wire controller and main board
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