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View Full Version : 1999 goodman furnace flame cycles on and off.


gvr64
Dec 26, 2010, 10:46 AM
Goodman furnace appears to only have a heat sensor and a flame sensor, I sanded the flame sensor,it had some dark spots on it and I examined the heat sensor but it appears normal it does have a clicking noise in it when shooked back and forth? System runs OK but flames are cycling on and off so not enough heat is generated to heat up home properly