York diamond 80

Old 04-01-11, 10:53 AM
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York diamond 80

I have a York Diamond 80, model p2mpd furnace, about 11 yrs old. It ran well all winter until I noticed a gas leak in gas pipe leading to furnace. Gas was shut off, valve replaced, secure leak. Furnace started all right after this chore.
It worked well for about 2 days, then the flue blower would come on, you could hear a click when gas valve was to open and it did not, also ignite item does not glow like it should and allow the gas valve to feed burners. I have checked all that I could think of, even replaced gasket on vent chamber to make sure there was no air leak, code is either 3 flashes or 1 at different time. I would check high limit switch if I knew where it is located, I don't have manual or schematic to check.. Also I have read that there is possible a "reset" switch that can be reset, where is it?

Last edited by hvactechfw; 04-01-11 at 12:40 PM. Reason: do not hijack another thread, it can become confusing on which problem you are talking about between different poster's
Old 04-01-11, 12:35 PM
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Have you checked on the inside of the blower compartment door? The wiring diagram is usually attached there.

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