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My T8602C Chronotherm III will not power up. When I turn it on the display is all fine. It just doesn't seem to be getting any power from the main unit

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6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

SOURCE: honeywell chronotherm III air conditoner

I had that last night. I turned off the unit for a couple of hours and it came back on and ran and cooled. I have no friggin' idea if it will work but it got us through last night.

Posted on Jun 24, 2008

rickzilla
  • 706 Answers

SOURCE: my husband &i just purchased

Hello.
here is a link to a website that will provide you operating instructions. Hope this helps...

http://www.hannabery.com/t8611tstat.shtml

Regards

Posted on Sep 23, 2008

  • 9 Answers

SOURCE: -AC appears in the display of chronotherm III

I have had the same problem- twice. It was a similar but different problem each time. The -AC means the ac control voltage isnt making it to the thermostat. In my case both times it was a switch in the control circuit that wasn't closing properly. The easiest was the front cover switch. If the front cover is removed from the furnace or has vibrated loose, the switch will open, preventing the furnace from running. The other instance I ran into was a flow switch on the exhaust blower which ensures the there is flow OUT the chimney. The switch wasn't functioning, so the furnace wouldn't start. The blower would come on for a short time, but the burners wouldn't light.

Hope this helps,

Posted on Dec 12, 2008

  • 252 Answers

SOURCE: I have an old Honeywell thermostat (Chronotherm

you are not geting AC power from the furnace

Posted on Sep 27, 2009

  • 252 Answers

SOURCE: We have a chronotherm III and the display only

-AC means the thermostat is not geting AC power from the furnace

Posted on Oct 14, 2009

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