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Billy, Technician
Category: Pool and Spa
Satisfied Customers: 22541
Experience:  Licensed in Hydronics and Boilers
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I have a hayward H400 gas heater. It was worked every year.

Customer Question

I have a hayward H400 gas heater. It was worked every year. I just opened my pool and all is fine. the heater display will changes MODES and the water temp is displayed but the temp will not change up or down. Obviously the heater will not turn on so I dont know if it is the board itself or another issue
Submitted: 2 years ago.
Category: Pool and Spa
Customer: replied 2 years ago.
I just want to make sure that you received my question. I am not trying to rush you but I didnt know what the normal response time is. thks
Expert:  Billy replied 2 years ago.
to start...can you tell me if the flow switch is activating? Pumps running, filter clean and flow switch closed?
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