Question about Honeywell Heating & Cooling

1 Answer

AC unit will come on sometimes, I dont know how to use program on thermostat so we just use the temporary setting to run the AC usauly on auto now it doesnt come on at all, I have been setting it on "on" unit is 5 years old.

Posted by on


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 182 Answers

Make sure the stat is set on COOL.check breakers and fuses.if that doesnt help,you'll need a pro.

Posted on Aug 06, 2008


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

My Goodman AC unit is not working when i turn on ac on with is cold but the fan not is not running why ? but the heat is working fine { fan is working with the heat

Generally the fan operates by the command from the thermostat. First thing I would try is put the fan/auto switch in the on position. If the fan comes on you have a problem with the thermostat or the green wire that goes to the G terminal on the thermostat sub base. I suspect he may not have programed the thermostat for the type of system you have or he doesn't have a jumper between the rc and rh terminal on the sub base. Sometimes the jumper is not required and the thermostat instructions must be read completely to get the answers. Goods luck hope this helps.

Oct 14, 2014 | Heating & Cooling

1 Answer

Honeywell Thermostat RTH6350 makes heat run in AC mode after AC runs

Well, if it wasn't doing that before then you more than likely know its in your wiring. Cools down then heats back up sounds like the auto change over is on, and the heat setting is higher than the cool setting?

Mar 02, 2017 | Heating & Cooling

1 Answer

My programmable thermostat does not work properly. When I attempt to push "temporary hold" and set a temp, it responds sometimes but will not continue to hear the house. OR it does not respond...

you should hear the themostat make a light click when it calls for heat...the hold or as you said temporary hold overides any programming you have and should maintain that temperature you are setting it on indefinetely of until the next programmed cycle... to check and make sure the unit is actually working properly try it again ... actually go after you hold the setting and see if unit is thermostat have a five minute time delay built in so from the time you press hold and raise the temperature above house temp a few degrees start a counter for 5 mins... if the unit does not come on then unplug the unit or reset breakers to heat and try again watching the unit to see if anything this a gas unit or electric unit? if the unit never responds then go to thermostat and remove cover take a small jumper wire and jump out the "r" terminal and the "w"terminal which is power and heat circuit see if it comes on if it does and should immediately as this way bypasses the thermostat operation then you have a faulty t-stat.

Jan 11, 2011 | Honeywell Programmable Thermostat Heater

1 Answer

Hiiiii..... I have samsung Thermostat AC, But i dont know how to use the warmer / heater for the same. I dont know about the model number but its one of the old AC written thermostat. Now help me out how...

Symbolsin remote: To get proper cold air set temp 23 degree and mode"cool". To get heat set temp 30 degree and mode in "Heat"
Now symbols:
1. fan leaves - Fan only
2. Rain drop- Dry mode
3. Snow flake-Cool mode
4. Sun- Heat
5. A or AU- Auto mode.

Jan 03, 2011 | Samsung AW1203B Air Conditioner

1 Answer

My thermostat when prgrammed and set on "auto" mode kicks on heat when temp drops below set temperature. The problem is that after warming up to that does not shut the fan off. ...

I have a honeywell TH8320U thermostat and American standard Air handler with heating unit put in. THE thermostat works fine with the ac and follows the programs I have set. However the heat is a different story. The thermo clicks on to follow program but the unit does not run. (auto settings) If I place the thermo in heat and turn it to on I get heat?

Dec 08, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

I have an old RUUD central AC unit that started blowing hot air. I set the thermostat to off and set the temp gage higher than air temp to turn the unit off and save money, but inside blower unit runs...


Okay did you check your thermostat to see if you have the fan switch on auto? The switch must be on auto or the fan will continue to run. If the thermostat fan switch is on auto then there is a malfunction in the thermostat probably. You can go to your forced air unit and on unplug the unit. That way it will not turn on at all, because the forced air unit is controlled by the thermostat. Hope this helps.

Jul 26, 2009 | Heating & Cooling

2 Answers

Unit will run if the thermostat is switch on ON, but if left on AUTO unit will hum and won't run.

For most Thermostats on and auto is for the fan switch function. There s usually another button for heat off cool. When you turn a\c or heat on , the fan switch should be on auto.

Jul 10, 2009 | Heating & Cooling

1 Answer

Programmable thermostat intermittent problems...

Some tstats control humidity as well. Temp will over shoot set point in order to reach humidity s

Jun 24, 2017 | Honeywell Programmable Thermostat Heater

1 Answer

Honeywell Old T874D1512 dual heat/cool thermostat

I think I understand what you are saying....First, that switch marked On and Auto, is to control the blower fan only. So when you switch that to On, it turns on the blower, but not the actual heat. It sounds more like a problem at the furnace then at the thermostat.

Nov 17, 2008 | Honeywell Consumer Products Mechanical...

1 Answer


a programable thermastst has different modes. in auto it can deside whether to apply heat or cooling. ac air coditioning. or you are in ac mode, but should notice the ac unit comming on. if no ac unit then of corese it won't come on :)

Jan 15, 2008 | Honeywell Programmable Thermostat Heater

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

Related Topics:

41 people viewed this question

Ask a Question

Usually answered in minutes!

Top Honeywell Heating & Cooling Experts

Bill Long

Level 3 Expert

588 Answers

Paul Carew

Level 3 Expert

3150 Answers

vance jones

Level 2 Expert

120 Answers

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

Answer questions

Manuals & User Guides