Error message on pool heater

ab850903

New member
May 4, 2025
1
ohio
Just opened pool for the spring and have an error message on our pool heater “amb sensor fail” any thoughts on this?
Rheem heat pump
Model 8450TI-E
 

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Welcome to TFP.

The ambient air temperature sensor has failed. The HP needs to know the outdoor temperature to operate.

You may be able to replace it if you are comfortable opening the unit. Otherwise, call an HVAC company for service.