Question about Honeywell Programmable Thermostat Heater

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Furnace will not shut off

5:30 am sunday morning wake to furnace running thermastat set at 68. house was almost 90 deg. turned to off setting to let house cool down.now temp. is at 74deg. but if you turn setting back to heat the furnace starts right back up.

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  • jimbreiter Dec 08, 2008

    Same problem here.

  • jcox99 Jan 22, 2009

    house is 90 and set the honeywell to 65 no dice help!

  • angelsspot Jan 24, 2009

    I have a Cozy Challenger that I changed the thermostat and it still wont shut off where's the relay on it?

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  • 34 Answers

Something is wrong with the thermostat.  replace it first, that would be the cheapest alternative

Posted on Nov 24, 2008

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Whdoes it mean of wake, return, sleep and leave on honeywell digital thermostat


I believe it means (I assume winter weather in my example):
1. Wake - This is the time you wake up and you would set the temperature at the time you want it then. So, your temperature throughout the night might have been set at 63, and if your "wake" time on the thermostat is set to 6:00 am and 68 degrees, then your system will automatically adjust the temperature setting to 68 degrees at 6:00 am.
2. Leave - This is the time that you would typically leave your house for work. You probably don't need to heat or cool your house that much during this time especially if no one will be there. So, let's say you leave for work at 8:00 am. You would set this time for 8:00 am and 60 degrees.
3. Return - This is the time you get off work. Let's say you get off at 5:00 pm. You would set this time for 5:00 pm and 65 degrees. Then the system will start warming up at 5:00 pm and will be warmer by the time you get home.
4 - Sleep - This is for when you go to bed. Following the example, let's say that you set your temperature while sleeping to 63 degrees at 10:00 pm. Then, the system adjusts at that time and will adjust again as soon as then next parameter is met, which at this point would be the wake time.

This is usually for a Mon - Fri schedule and then a separate one for the weekend.

Jan 02, 2012 | Honeywell Programmable Thermostat Heater

1 Answer

Twice now, our thermostat, being set on 72, we wake up in the am and it was set on 40!!! The house temp was 60, but it was freezing in the morning..i reset the temp back to 72, and it works again. Just...


Ok this is a state that is running on a program. You are going to have to go through and set the set points on it. This can be done by looking at the screen and pressing the program button. Set the tempature at the right time. There will be settings for monday through friday and sat/ sunday. There may be as many as 4 different set points for each of these so take you time and go through each one.

Jan 25, 2011 | Honeywell Programmable Thermostat Heater

1 Answer

I just installed a honeywell 5-2 progammable thermostate.. Everything is hooked up fine and I have my days, hours wake, sleep, leave...etc all set, but when it goes on.. for example, I have it set for...


You didn't include a model number, so it's hard to know for sure - but I'll take a stab at this one. Many of these t-stats have a programmable offset to reduce "hunting". This can be as little as 1 degree or more than 2 degrees.

This means if you set the offset to 1 degree and the room temperature to about 65 degrees, the furnace will heat the room until the t-stat registers a rising temperature of 66 degrees. The furnace shuts off and will not turn on again until the t-stat registers a falling temperature of 64 degrees. The average is 65 degrees, and prevents the furnace from starting and stopping numerous times instead of just once with the 1 degree offset.

You can further reduce the number of furnace start and stops by increasing the offset to 2 degrees. This would work like this when the t-stat is set to 65 degrees and the room is cool:

Room Temp Furnace
63 On
64 On
65 On
66 On
67 On
68 Off

The room is now warm and heat or furnace is off. The room begins to cool like below:

67 Off
66 Off
65 Off
64 Off
63 Off
62 On

With a 1 degree offset, the room temperature varies +/-1 degree (about 2 degrees total). With a 2 degree offset, the temperature about varies +/ -2 degrees (about 4 degrees total).

Also, when the thermostat shut the heat off, the heat that was made is delivered to the space instead of wasted by sending outdoors - so the room will get a little warmer even though no fuel is being burned. The same holds true at the other end. When the t-stat turn heat on, fuel is burned, but there's little heat until the source has reached the optimum temperature and then the heat is delivered to the space.

I hope this helps & good luck! Pleas rate my reply - thanks!

Jan 24, 2011 | Honeywell Programmable Thermostat Heater

1 Answer

Furnace cuts off before reaching set temp.


You can make sure it is not the thermostat by crossing or jumping the R and W terminals (or associated wires) together. This will keep the furnace calling for heat. As it is approaching set temperature, get in front of the furnace and inspect the air filter to make sure it is clean, watch the control module for any error codes that may be turning off the system prematurely.

On a call for heat, the 24 volt thermostat sends a signal to the control module. The control module will indicate a call for heat with a light on the control either blinking or remain solid depending upon model. The inducer (exhaust) blower will purge all gasses from the furnace and pressurize a pressure switch. Once the pressure switch tells the module to continue, the electronic ignition will energize and send 120 volts to the igniter. The igniter will glow and you will be able to see it if viewed thru the small inspection port. Once the igniter gets hot enough, it sends a signal to the module opening up the gas valve (24 volts). Either a pilot will come on or the burner tube will ignite then spread the flame to all burners. Lastly a safety sensor will be looking for a certain temperature within a few seconds and the furnace will continue to operate and the room air blower will turn on in a minute or two.

What could go wrong? The unit will not run if there is no signal from the thermostat (bad thermostat or broken wire), the control module does not sense a signal from the thermostat (bad control), the inducer does not energize (bad motor), the pressure switch does not close (blocked vent piping, bad switch, plugged condensate hose), the igniter does not energize (bad control, bad igniter), the gas valve does not open or there is no gas (bad gas valve, broken wire, no gas), the pilot does not light (dirty pilot), the burner does not light (bad burner, plugged orifice, not enough combustion air), the flame does not spread to each burner (bad flame spreader, dirty flame spreader, more bad burners), the flame safety sensor does not detect flame (dirty or bad flame spreader, bad flame sensor, broken wire, bad control), or the room air blower does not energize (bad fan motor, bad control).

Mar 07, 2010 | Honeywell Programmable Thermostat Heater

2 Answers

With new digital thermostat furnace runs every 10 min.


which type of T-Stat is it ? most standard t-stats have it built in that the temperature range is only a half a degree, it may seem like its running alot more, but in actuality it is maintaining better home comfort as it is not running as long as the old bimetal t-stats which would have a range of anywhere from 2-5 degrees which would cause the furnace to run alot longer, use more energy, use more fuel, and you would notice a definate change in the house temperture before it would come on or shut off, your t-stat seems to be working properly, and it will save you money, remeber also to change those filters !!!

Jan 20, 2009 | Honeywell Programmable Thermostat Heater

2 Answers

FURNACE CYCLING ON AND OFF ..


I would check furnace filter first. If that looks good i would check the thermostat. To check thermostat turn power off to furnace then take thermostat off the wall and connect wires labbled R & W together then turn power on and check furnace to see if it runs for more than a couple of minutes. If so install a new thermostat. If that doesn't work let me know and i can give you a couple more thing to try.

Jan 17, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

Temp shows 2 degrees warmer than what is was set to


sometimes the furnace does a better job than anticipated, i wouldn't worry about it, especially if the furnace shuts off.
the setpoint is the temperature you want it to be
cycle lenghts are determined by how much recovery you are requesting. for instance, in the morning when you wake up, you want the temperature to be at its setpoint. what the thermostat will do is make the furnace run a limited lengths during the recovery process.

Nov 11, 2008 | Honeywell Programmable Thermostat Heater

1 Answer

Thermostat displays 79 deg but really 68 in room


If the thermostat does not have a reset, replace it.

Nov 05, 2008 | Honeywell Programmable Thermostat Heater

1 Answer

Furnace not running along with heat pump


Someone did not program your thermostat to operate according to your heat and air requirements.
Have it programmed correctly.

Apr 21, 2008 | Honeywell Programmable Thermostat Heater

2 Answers

Thermostat


I have a Honeywell Programmable Thermostat, T8011R. The users guide for the T8000 series can be found at:
http://www.honeywell.com.au/business/acs/acp/ecc/ec/residential/identify.html

To keep your temperature at a single setting, just enter the temperature at every period, i.e. WAKE, LEAVE, RETURN AND SLEEP for both the Monday through Friday time frame and the same for the weekend. I do this at 55 degrees when I'm going to be out of town.
To 'Guest' , enter your 68 degrees at WAKE, LEAVE and RETURN, then enter 66 degrees at SLEEP. Do this for the Monday through Friday time frame and again for the Saturday - Sunday time frame.

Dec 19, 2007 | Honeywell Programmable Thermostat Heater

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