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Thread: Hayward H350 Ignition and Mode button problem

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    Hayward H350 Ignition and Mode button problem

    I have an electronic ignition Hayward H350 gas heater and I'm having trouble for the first time this spring.

    When I turn it on, the heater tries to light (I hear the ticking from the ignition) but no dice. After a while, I get the "IF" failure code. The gas is turned on and the first thing I did was remove all the gas ports and blow them out. 2 of them were blocked by spider webs. Re-installed and there is no improvement.

    Also, I'm not sure if this is related but the Mode button seems to do nothing. I press it and it does not cause the heater to go into spa or pool mode. It stays with the Standby light on at all times. I'm pretty sure this was the case last year too and the heater still worked.

    Any ideas?
    Concrete (gunite) inground pool and spa (80,000 litres/21,000 gallons)
    Hayward H350 natural gas heater (electronic)
    Goldline Aquarite chlorine generator
    Hayward pumps, Hayward Pro Series sand filter, Goldline valve actuators

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    chiefwej's Avatar
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    Jun 2011
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    Tucson
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    Re: Hayward H350 Ignition and Mode button problem

    IF is ignition failure. I had that code with my heater and had to replace the igniter. I recall the part was about $40. If you have the manual look up the IF code, if not a bit of searching online should lead you to a repair manual for the heater.
    chiefwej
    Tucson, AZ
    19k gallon Pebble Tec play pool/spa, Pentair Intelliflo VS (3 hp) 011018, Super II 2hp (for spa), Aqua Rite T-15 SWG, Pro Grid 60 DE filter, Hayward H400 & Heliocol Solar heating, A&A infloor system, fill water w/high CH and TA, 50 ppm borates,TF-100 test kit

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    Re: Hayward H350 Ignition and Mode button problem

    Turns out the problem was the gas. We had the meter replaced in the late fall and the serviceman didn't connect the service to the pool heater. Always check the most obvious problems first!
    Concrete (gunite) inground pool and spa (80,000 litres/21,000 gallons)
    Hayward H350 natural gas heater (electronic)
    Goldline Aquarite chlorine generator
    Hayward pumps, Hayward Pro Series sand filter, Goldline valve actuators

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