15
Troubleshooting
Error codes
If a protection kicks in or if an error is detected in the heat pump, an error code will be reported on the spa keypad.
If more than one error is detected, only the error with the highest priority will be displayed.
All error codes are listed below in priority order.
Error code Error description
HP99
Communication error
HP05 Coil temperature sensor failure
HP18 Water outlet temperature sensor failure
HP42 System 1 high pressure protection
HP46 System 1 low pressure protection
HP41 Water flow protection
HP01 System 1 exhaust temperature sensor failure
HP19 Water inlet temperature sensor failure
HP09 System 1 return gas temperature failure
HP22 Ambient temperature sensor failure
HP65
Ambient temperature too low protection
HP55
Water inlet/outlet temperature difference protection
HP51
System 1 exhaust temperature too high protection
HP63 Water outlet temperature too low protection when defrosting
HP56 Water outlet too cold for cooling
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