Furnace problem
Ok furnace would start then in seconds go out blower still running the it would reignite the after a few seconds burner goes out again then finally it stays lit. I had the sail switch replaced didn’t ...
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Furnace fan comes on...purges...main flame lights run five minutes then flame goes out and fan continues to run...then flame lights repeats
Blocked/obstructed discharge and/or return....lack of proper airflow thru heat exchanger causes 'high limit switch' to open (shuts down gas valve).
Fan cools heat exchanger high limit switch closes and circuit board opens gas valve ....called 'limiting'
Check vents/registers, return air and anything up against furnace that would block return air
Blocked/obstructed discharge and/or return....lack of proper airflow thru heat exchanger causes 'high limit switch' to open (shuts down gas valve).
Fan cools heat exchanger high limit switch closes and circuit board opens gas valve ....called 'limiting'
Check vents/registers, return air and anything up against furnace that would block return air
