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Thread: haward comfortzone heater

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    haward comfortzone heater

    My hayward comfortzone natural gas heater model cz250c1 will not light .I have the pilot light lite no problems there. When i jump across th terminals on the gas valve nothing. When i check the thermopile output i only get 190mv, The manual says 500mv but if it was bad would the pilot light work? Is it a bad gas valve or thermopile?
    15000 Gallon PebbleTec w/ spa, 1.5hp single speed pump, Hayward S244S sand filter, A&A in-floor cleaning

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    Join Date
    Aug 2009
    Location
    SW Wisconsin
    Posts
    518

    Re: haward comfortzone heater

    sounds like a bad thermocouple...if it's bad...your heater won't light. but the pilot could stay lit.
    33' x 52" Swim and Play Inc. PARAGON AGP. Hayward H200 Heater. Hayward Power-Flo LX 1.5hp pump. Sta-Rite Cristal Flo T-210WF Sand Filter. Stenner 45M5 chlorine pump

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    Re: haward comfortzone heater

    It might also be a clogged pilot orifice. If the pilot flame is insufficient, then it won't provide enough energy to power the gas valve.

    How old is the heater?

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    Re: haward comfortzone heater

    It's about ten years old
    15000 Gallon PebbleTec w/ spa, 1.5hp single speed pump, Hayward S244S sand filter, A&A in-floor cleaning

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    Re: haward comfortzone heater

    Thanks guys i'm going to try to get the lower burner section out today and clean the pilot tube out and clean up the thermopile . can i heat the thermopile with a torch when i have it out to test its output without damaging it.
    15000 Gallon PebbleTec w/ spa, 1.5hp single speed pump, Hayward S244S sand filter, A&A in-floor cleaning

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    Re: haward comfortzone heater

    update heater is working . I removed the bottom burner unit , removed the pilot light tubing and found the jet at the pilot end blocked with a cob web, cleaned the thermopile with sand paper and cleaned out the burners reassembled. Checked the thermopile output with the stronger pilot light and got 500mv. turned heater on and presto it fired right up. thanks guys
    15000 Gallon PebbleTec w/ spa, 1.5hp single speed pump, Hayward S244S sand filter, A&A in-floor cleaning

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