Thread: Furnace repair question
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Old 04-17-2018, 12:28 PM
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owlhoot owlhoot is offline
 
Join Date: Dec 2007
Location: southeast alberta
Posts: 1,178
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I had this happen on my Armstrong furnace, the 3 flashes can mean pressure switch open, I had it checked and it turned out to be a short in the gas valve
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