Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater
Problem for Honeywell Electronic Programmable Heat/Cool Thermostat -...

Furnace won't shut off




By daisy123456 on Jul 04, 2009

" "
I have a York M8 series furnace that will not shut off.

Solution #1

posted on Sep 12, 2009
Not Rated)

mac5932002

Rank: Guru  Honeywell Air Conditioners  Expert
Rating: 88%, 64 votes
your control may be shorted due to getting wet. make sure the coil isnt frozen or that the drain line is clear and the inside of the furnace isnt wet. sometimes just letting it dry could solve the problem depending on the severity of water damage of course. more info would be needed to give you further diagnosis
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