Error Codes - ECO2 Systems SANCO2 GS4-45HPC Installation Manual

Error Codes

Error Codes
When an error has occurred, a red LED on the operation panel turns on and an error code
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 revert to the display sleep mode while
is displayed on the LED display. The panel does not turn to the display sleep mode while
the error code is shown.
the error code is shown.
Figure 14 Error Code example
Figure 14 Error Code example
After a component is replaced or the inspection is completed, turn the breaker OFF for a
After a component is replaced or the inspection is completed, turn the breaker on/off
period of 3 minutes before restarting to confirm the error does not re-occur.
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,
Below is the list of the error codes. If the corrective action does not solve the error
a malfunction of the PCB valve is highly likely.
problem, a malfunction of the PCB is highly likely.
Error Error contents
code
Error
HP ambient (outdoor) temperature
H9
code
thermistor error
E001 HP water outlet over temperature 1
HP water outlet（outgoing）
HC
temperature thermistor error
HP discharge temperature thermistor
J3
error
HP suction temperature thermistor
J5
E002 HP water outlet over temperature 2
error
HP defrost temperature thermistor
J6
error
HP water inlet（return） temperature
J8
thermistor error
HP outlet temperature thermistor
E003
detection error
E004 HP discharge over temperature 1
H7 Tank temperature thermistor error
E005 HP discharge over temperature 2
HP discharge temperature
E006
Thermistor detection error
E6 Compressor booting error
E007 High pressure side error
Error contents
Sanden Heat Pump – Installation Manual
Sanden Heat Pump – Installation Manual
SANCO Heat Pump – Installation Manual
Page 18 of 32
2 Page 24 of 40
Page 26 of 44
Corrective action
Corrective action
- Check the heat pump piping for
blockage/debris
- Check the thermistor connectors on the main
- Check for any piping bend, blockage or
PCB or control PCB in the heat pump unit for
kinking
any disconnect, fall-off, wire breakage or short
- Check pipes are not frozen
circuit.
- Ensure mains water supply is available
- Measure resistance of the thermistor indicated
- Ensure all shut off valves are open
by the error code.
- If the water circulation pump is not
working, replace the pump
- In areas with hard water ensure Gas Cooler
is not scaled up, descale if necessary
- Check if the thermistor is out of the
- Check the thermistor cable on the terminal
mounting pocket on the water outlet pipe
block in the heat pump unit for any disconnect,
- Replace the discharge temp thermistor
fall-off, wire breakage or short circuit.
- Reconnect the expansion valve PCB
- Measure resistance of the thermistor indicated
connector, check to ensure connection
by the error code.
- Replace the expansion valve (together
with PCB), or the entire heat pump unit
- Check the compressor connector.
- Check the heat pump piping for any
- Replace the main PCB or heat pump.
blockage
- Check for any piping bend, blockage or kink
- Check if the pipes are frozen
- Ensure mains water supply is available
- Ensure all shut off valves are open
- If the water circulation pump is not