Hayward Heater H250 CE ERROR for Seconds, THEN SF

[BKOhioPool]

Hello!

I have a hayward heater that is showing CE when booting, then switches to SF quickly. I have read that it could be the temp sensor, but my temp sensor is plugged into my Prologic 4 system and is reading the correct temperature. It is my H250 that is showing the error. I was going to replace my temp sensor, but I don't know if that is a waste of time based on the CE error. Any advice would help!

Also, I tried to move my heater from "bo" mode back to manual to test if its the connection to the prologic, but the SF error won't let me do anything on the board.

Thanks!

BK

 

[ajw22]

Welcome to TFP.

Your H250 has its own temperature sensor that is the problem separate from the sensor connected to your ProLogic 4 system.

For more on the CE and SF codes read Hayward H-Series Heaters - Further Reading

 

[BKOhioPool]

Yes, I found that yesterday and removed it. It did not look corroded (maybe i'm wrong, pic attached) and the wiring looked fine. I order another one and will install it today to see if that fixes the issue. Thanks!