Hydro Flame 8500 blower runs but random ignition

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Hydro Flame 8500 blower runs but random ignition by Paul Ramsbey

Hi, I read your troubleshooting guide on the Hydro Flame furnace and thank you for posting it. I am having a problem where sometimes my furnace fires and sometimes the blower runs but there is no ignition. I have verified that I am always getting 12V to the top white wire on the board indicating the sail switch and hi limit are both closed. Sometimes I get power to the gas valve and sometimes I do not. If there is power, it ignites. I've cleaned all the connections on the board and can't seem to figure out why it works sometimes and why it doesn't others? Could the board be bad? I was told that when a board goes bad it is done - it won't work sometimes and not work other times. What are your thought and do you have a board for a Hydro Flame model 8531 - II? The board has the following number on it 86-235094-091. The camper is a '94 so I assume that is the vintage of the furnace. Thank you very much for your assistance! Paul Ramsbey

All Messages in Thread		Author	Date
	Hydro Flame 8500 blower runs but random ignition	Paul Ramsbey	10-26-09
	Re: Hydro Flame 8500 blower runs but random ignition	Paul Ramsbey	10-27-09
	Re: Hydro Flame 8500 blower runs but random ignition	Keith	10-26-09
	Re: Hydro Flame 8500 blower runs but random ignition	Paul Ramsbey	11-10-09
	Re: Hydro Flame 8500 blower runs but random ignition	Tim Diamond	11-19-09
	Re: Hydro Flame 8500 blower runs but random ignition	david riley	12-3-09
	Re: Hydro Flame 8500 blower runs but random ignition	Brian	1-20-10

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