What does error code PF mean on a Hayward pool heater?

Polarity reversed or low voltage. Voltage polarity is reversed or the voltage is low.

Can I fix Hayward code PF myself?

Start with these safe checks: Note the code. Supply wiring is a job for a licensed electrician.

When should I call a technician for code PF?

Supply wiring is a job for a licensed electrician. Unplug it or switch the breaker off before you remove any panel. Don't test or replace wiring, control boards, heating elements or motors under power. If you see scorching, smell burning, or the breaker trips again, leave it off and call a qualified appliance technician or electrician.

Hayward pool heater error code

Hayward pool heater code PF: Polarity reversed or low voltage

Hayward Universal H-Series gas heaters

What PF means

Voltage polarity is reversed or the voltage is low.

Likely causes

Wiring problem
Low supply voltage

Safe first checks

Note the code.

When to stop

Supply wiring is a job for a licensed electrician.

Checked against: Hayward Universal H-Series heater troubleshooting guide (UHS16b): diagnostic codes. Codes can differ by model and year, so confirm with your owner's manual.