Question about Honeywell Heating & Cooling

Open Question

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

Posted by on

5 Suggested Answers

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

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Coleman 2ton Basement air does not respond to thermostat but will turn on and run fine after 6 to 36 hours


Check contactor in condensor,if it looks good check refrigerant levels if you're EPA liscensed.

May 25, 2014 | Coleman Mach III Air Conditioner

1 Answer

All I need to know is this: The Chronontherm III died (my house is 20 years old and I believe it was original to the house) and I need a new thermostat. Can I replace the Honeywell Chronotherm III...


Hi,

Yes, you can replace with that...just make sure that you mark the wires BEFORE removing them...so you can place them on the same terminals on the new t-stat...

Here is a list of each common terminal and what their commonly used for. Also listed is what colors are commonly used. NEVER ASSUME these are what you have. Verify all your wires by following each to each piece of equipment. This will help you to be able to match your equipment with the terminal.

Here is the rest of the tip that I wrote...

Thermostat Wiring and Terminal Designations


heatman101

Jan 11, 2011 | Heating & Cooling

1 Answer

The digital display on my honey well chronotherm IV plus goes dead for anywhere from 10 minutes to a couple days and during that time the furnace does not function, then it will pop back up and everything...


The brass terminals, between the front and the subase tend to corrode. Turn power to furnace off, loosen two screws at base of front cover, pop bottom from wall, clean brass spring contacts and matching pins, with fine sand paper or emery board.

Nov 24, 2010 | Heating & Cooling

1 Answer

Aux heat light is dimly lit when A/C kicks on. It's a roughly 10 year old Chronotherm III.


Take a meter capable of reading AMPS and place it on the incoming power lead to the air handler. If you read amps in excess of 2.0 the heater is engaging. It could be a bad thermostat or a bad heat relay.
If you read 2.0 amps or less it is a bad thermostat.

Sep 22, 2009 | Carrier Heating & Cooling

1 Answer

I have a Honeywell Chronotherm IV Plus a/c unit and I can't get my air condt. to turn on. The room temp. says it's 17 degrees in the house so it won't turn on. I need to know how to reset the room tempt....


Not only are the Chronotherm IV's less than user friendly, they have a terrible failure rate. It sounds like one of the typical failures of the chronotherm IV. I suggest starting with a new thermostat.

Jun 12, 2008 | Honeywell Heating & Cooling

1 Answer

Thermostat malfunction


You may want to shut the breaker off to your furnace or air handler, or if you have a packaged system turn it's breaker off. This will kill the low voltage to the stat possibly allowing it to reset. I would also try to reset it after you turn your breakers back on.

Dec 22, 2007 | Heating & Cooling

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

141 people viewed this question

Ask a Question

Usually answered in minutes!

Top Honeywell Heating & Cooling Experts

Bill Long

Level 3 Expert

587 Answers

paulcarew

Level 3 Expert

2113 Answers

Brandon Berry
Brandon Berry

Level 2 Expert

407 Answers

Are you a Honeywell Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...