Question about Hayward H-series Electronic Gas Pool Heater H300
Most likely your flame sensor needs to be cleaned with fine emory cloth.sensors sometime become oxidized or corroded. once burner ignites,if flame is not sensed signal is sent to shut down valve as a safety precaution
Posted on Jul 24, 2009
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Posted on Jan 02, 2017
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There is not enough system pressure to close the heaters pressure switch so the heater will not fire or it may be the switch itself is bad but you should first check for system problems that will cause this light to come on.
Assuming your pump is on and any valves in your pipes are set correctly it means something is restricting water flow too much and needs to be cleaned to fix your flow rate and allow the heater to fire.
Start at the skimmer(s) baskets and then the pump strainer basket and finally clean your filter. If it is a sand filter backwash the thoroughly; if it's a cartridge or DE filter, clean it according to your manufacturer's direction. In some cases cleaning a cartridge filter will no longer satisfy heater pressure requirements meaning you will need to replace the element.
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