Error Codes - Sanden GAUS-160FQS Installation Manual

Error Codes

When an error has occurred, a red LED on the operation panel turns on and an error code
is displayed on the LED display. The panel does not turn to the display sleep mode while
the error code is shown.
Figure 14 Error Code example
After a component is replaced or the inspection is completed, turn the breaker on/off
several times to confirm the error does not re-occur.
Below is the list of the error codes. If the corrective action does not solve the error problem,
a malfunction of the PCB valve is highly likely.
Error
code
HP ambient temperature thermistor
H9
error
HP water outlet temperature
HC
thermistor error
HP discharge temperature thermistor
J3
error
HP suction temperature thermistor
J5
error
HP Heat exchanger temperature
J6
thermistor error
HP water inlet temperature thermistor
J8
error
H7 Tank temperature thermistor error
E6 Compressor booting error
H6 Compressor revolution error
Error contents
Sanden Heat Pump – Installation Manual
- Check the thermistor connectors on the main
PCB or control PCB in the heat pump unit for
any disconnect, fall-off, wire breakage or short
circuit.
- Measure resistance of the thermistor indicated
by the error code.
- Check the thermistor cable on the terminal
block in the heat pump unit for any disconnect,
fall-off, wire breakage or short circuit.
- Measure resistance of the thermistor indicated
by the error code.
- Check the compressor connector.
- Replace the main PCB or heat pump.
- Check the supply voltage.
- Measure resistance of each thermistors.
- Measure resistance of coil of expansion vale to
check open or short circuit.
- Replace the PCB or heat pump.
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Corrective action