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Phil, Mechanical Engineer
Category: HVAC
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Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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Have a furnace-Honeywell ChronothermIII thermostat. Heat

Customer Question

Have a Coleman furnace-Honeywell ChronothermIII thermostat.
Heat will not com on
Replaced batteries
Set on auto heat
Screen says the time-AC
Thanks,
Jerry ***@******.***
Submitted: 1 year ago.
Category: HVAC
Expert:  airheatman replied 1 year ago.

Will anything come on at all?

Expert:  airheatman replied 1 year ago.

The AC on thermostat indicates we are not getting any power from the furnace.Lets start by seeing if there is a small auto type fuse blown on furnace control board.

http://i.imgur.com/kYe4Epz.png

http://i.imgur.com/npXp7I3.png

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