Installation manual

Sanden Heat Pump – Installation Manual
Page 22 of 32
Error Codes
When an error occurs, a red LED on the timer setting panel turns on and an error code is
displayed on the LED display. The panel does not return to the display sleep mode while the
error code is shown.
After a component is replaced or the inspection is completed, turn the breaker on/off several
times for at least 60-120 seconds each time, 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 controller is highly likely.
Error
code
Error contents
Corrective action
E000
No error generated
E010
HP inlet temperature thermistor wire
break
Check the thermistor connectors on the
main 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
E011
HP inlet temperature thermistor
short circuit
E012
HP outlet temperature thermistor
wire break
E013
HP outlet temperature thermistor
short circuit
E014
HP ambient temperature thermistor
wire break
E015
HP ambient temperature thermistor
short circuit
E016
HP defrost temperature thermistor
wire break
E017
HP defrost temperature thermistor
short circuit
E018
HP discharge temperature
thermistor wire break
E019
HP discharge temperature
thermistor short circuit
E020
Tank thermistor wire break
E021
Tank thermistor short circuit
E040
HP water outlet over temperature 1
- Check the heat pump piping filter for
blockage/debris
- Check for any piping bend, blockage or
kinking
- Inspect for frozen pipes
- Ensure mains water supply is available
- Ensure all shut off valves are open
- If the water circulation pump is not
working, replace the pump
E041
HP water outlet over temperature 2