nl en de
Select your language

Select country

Errors


Boiler type Pionier PHR100-55

Error code Fou

Cause:

Outdoor sensor shorted or temperature less than -40ºF

Solution:

Inspect wiring from outdoor sensor for damage or shorted connections and repair as necessary. Measure resistance of outdoor sensor and compare to resistance chart. If not within range on chart, shorted, or open, replace sensor.