Air Quest Gas Furnace
It was chilly in the house in the morning. Wife turned up thermostat but no response for furnace. Checked trouble light. It was flashing 3 times witch means (pressure switch open when should be closed on single stage models. Low pressure switch open when should be closed on 2 stage VS models. My furnace is a single stage. If I shot the power off to the furnace and wait 5 minutes then turn it back on it will run ok for that cycle then start flashing the 3 code again. I checked and cleaned all the tubes that has to do with removing the condensation. They were pretty clean anyway. I call a repair man for some advise and he said to try to jump the two wires to the pressure switch and see if it works. I jumped the wires and still had the problem. Can someone help me out. Thank you
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