Question about Gibson Nordyne GR6GD-X42K072C 3.5 Ton 13 Seer 72,000 BTU Gas Electric Package Unit

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Open limit switch code

Furnace lights but only runs a couple of minutes,then cycles off, relights and repeat cycle again. After several cycles, fails to relight and blower can only be shut-off by killing power. When power restored blower still running. After a few hours process can be repeated.

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Take the Filter out of your furnace and try it again, some times the filter restricts the air flow to much going back to the furnace and it gets to hot and the switch opens. Also check that there is nothing blocking the return vents, like clothes, shoes or the ducts are very dirty but i don't think that's a problem. If the filter is a problem, put one of those spun fiber filters in, the kind you can see through they are blue or green. they are cheap maybe a $1.00 - $2.00
Hope this helps
V6boyo

Posted on Jan 10, 2013

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