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Thread: Raypak 406 heater turns on heats up for about 5-7 mins then turns off

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    Join Date
    Aug 2016
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    Parlin/NJ
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    Raypak 406 heater turns on heats up for about 5-7 mins then turns off

    Natural gas heater. See and hear spark. All wires are intact. Turns on from cold start no problem then heats for a few mins turns off then tries to reignite. I see the pilot sparking and lighting but the burners dont ignite and the pilot shuts off then tries to ignite again but pilot just lights for a spilt second then tunrs off. Then cycles again. Display shows SPK and CFH. Only error codes. Cleared burners and all debris and soot. Cant think of anything else to do. Im guessing its the PC board. Any other suggestions out there?

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    Jul 2011
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    Re: Raypak 406 heater turns on heats up for about 5-7 mins then turns off

    Do you still hear it sparking after the pilot is lit?
    Paul
    http://www.gastekservices.com A word of caution: When working with gas and electrical you might want to consider a licensed contractor. Consider the value of your life and others around you. If you would like to provide a review of the help I provided, please use the following link to leave a review. gastek - Google Search,

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