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julyblueberries
Apr 27, 2012, 04:16 AM
3 lights flash code. Initially, exhaust fan turns ON, then turns off. No clicking noises other then to turn ON the fan. Heater 9 yrs old. I checked filter, venting. Appears OK.

T-Top
Apr 27, 2012, 07:36 PM
The code to your flashing light should be on the blower door of the furnace. All the info you can give will help.