Hayward H250FDN Heater was installed a year ago and worked great, started the season early this year and the heater was working fine till a heavy rainstorm, the internal fan came on running continuously even in standby with a PF code for reversed polarity or low voltage. Checked connection at the breaker box and at the heater, PF code still there. What else might I check?
Hayward H series PF code
- Thread starter TSwartz
- Start date
- Jun 22, 2014
- 47,855
- Pool Size
- 17888
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45 Plus
Welcome to TFP! 
After doing some poking around, some possibilities include:
- Poor ground connections
- Corrosion/loose conductor connections
- Was breaker actually reset?
- Wire insulation exposed (i.e. rodents)
- Correct voltage? You should get 240 line-to-line and 120 line-to-ground on each leg. If the reading is off by 10% or more there is an issue to correct.
Some heater integrated control boards have been known to take a hit. Hopefully it doesn't come to that. @JamesW may have some words of wisdom to add. Stand by for more feedback.
After doing some poking around, some possibilities include:- Poor ground connections
- Corrosion/loose conductor connections
- Was breaker actually reset?
- Wire insulation exposed (i.e. rodents)
- Correct voltage? You should get 240 line-to-line and 120 line-to-ground on each leg. If the reading is off by 10% or more there is an issue to correct.
Some heater integrated control boards have been known to take a hit. Hopefully it doesn't come to that. @JamesW may have some words of wisdom to add. Stand by for more feedback.