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Billy
Billy, Technician
Category: Pool and Spa
Satisfied Customers: 22541
Experience:  Licensed in Hydronics and Boilers
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I am getting a SF error on my Hayward heater I change both

Customer Question

I am getting a SF error on my Hayward heater I change both hi limit sensors. still the error. I by passed the water pressure switch. still SF error Ant ideas
Submitted: 2 years ago.
Category: Pool and Spa
Expert:  Billy replied 1 year ago.
Hello,
usually it is sensor /thermistor not sending correct info to board.
But there are times the correct info is there but the board does not recognize it.
If you changed the sensors then you have a bad board