Jandy JXi 400,000 BTU Pool and Spa Heater with Digital Temperature Control PF Error Fix: Power Failure Detected

Error code PF on the Jandy JXi 400,000 BTU Pool and Spa Heater with Digital Temperature Control means: Power Failure Detected. The heater detected a power interruption and is going through a reset sequence — after a power outage, the heater resets its control board and goes through a cooldown and pre-purge cycle before attempting to re-ignite; usually clears automatically after 1-2 minutes; if the PF code persists after power has been restored, check the circuit breaker, GFCI outlet (if applicable), and wiring to the heater for loose connections

The most successful fix is "Test and Repair Heater Wiring and Control Board" (medium difficulty, ~45 minutes). This fix costs nothing. HomeMD has 2 community-ranked fixes for this error.

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Yes — the top-ranked community fix ("Test and Repair Heater Wiring and Control Board") is rated medium difficulty and takes about 45 minutes. Tools needed: Multimeter, Phillips screwdriver, Wire strippers.

DIY cost: $0. Professional repair typically costs $200-$350. Many homeowners save money by trying the top-ranked community fix first.

The Jandy JXi 400,000 BTU Pool and Spa Heater with Digital Temperature Control has 8 other known error codes, including: AFS (Air Flow Switch Fault), AGS (Air/Gas Switch Fault), CE (Communication Error), CF (Combustion Fan Fault), FE (Flue Exhaust Fault), and 3 more.

Error code PF also appears on 2 other Jandy models: JXi 260 260,000 BTU Pool Heater with High Efficiency and Digital Temperature Control, LXi 400,000 BTU Low NOx Pool and Spa Heater. The fix may vary by model, so check each model's specific page for tailored repair steps.