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intertherm m1mc 056a bw put to "on" now blower is on but col
Posted: Sun Dec 20, 2009 11:29 am
by punky729
Help! Woke up cold. Furnace will ignite, but shut off before blower runs. Instructed to change from "auto" to "on" on thermostat. I did that now when set at 50 degrees blower comes on fine, when set at 60 degrees, blower shuts off.
Re: intertherm m1mc 056a bw put to "on" now blower is on but col
Posted: Mon Dec 21, 2009 7:29 pm
by Robert
With t-stat set to on instead of auto, blower should be running continuously.
If burner is shutting off before blower comes on, may be a bad flame sensor or ignitor which serves as flame sensor.
Thanks,
Robert