78
Inverter swimming pool heat pump
GB
List of possible error codes
Error code E20
7.2
Code Error
Possible causes
Troubleshooting
1
IPM overcurrent
Malfunction of IPM module
Replace inverter module
2
Compressor
Compressor
Replace compressor
4
Reserved
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8
Compressor phase failure
Compressor connecting cable not or badly
connected
Check compressor cable connection
16
DC bus voltage too low
Input voltage too low / malfunction of PFC
module
Check input voltage / replace module
32
DC bus voltage too high
Input voltage too high / malfunction of PFC
module
Replace inverter module
64
Temperature of heat-radiating fans too high
Malfunction fan motor / blockage air duct
Check fan motor / air duct
128
Malfunction of temperature sensor at heat-
radiating fins
Temperature sensor heat-radiating fins short
circuit or open circuit
Replace inverter module
257
Connection malfunction
Inverter module does not receive PCB order
Check connection between module and
PCB
258
AC input phase failure
Input phase failure
Check wired connection
260
AC input voltage too high
Three-phase input unbalanced
Check voltage at three- phase input
264
AC input voltage too low
Input voltage too low
Check input voltage
272
High-pressure malfunction
Compressor pressure to high (reserved)
—
288
IPM temperature too high
Malfunction of fan motor / blockage of air
duct
Check fan motor / air duct
320
Compressor current too high
Current of compressor wiring too high /
driver and compressor do not match
Replace the inverter module
384
reserved
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