Question about Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater

1 Answer

Cooling limit on th320u

Honeywell th320u thermostat will not allow for adjustment below 70 degrees! I have tried reprogramming/resetting/beating with a hammer and it will not go below 70. Honeywell says to call a service tech! Ha- I have three here with me now and they can't seem to figure it out either!!!! What do I do?

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  • 596 Answers

The cooling setting will not go below the heating setting. lower the heating setting so you can lower the cooling

Posted on Jan 16, 2018

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6 Suggested Answers

6ya6ya
  • 2 Answers

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

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Posted on Jan 02, 2017

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Therinnaiguy
  • 1420 Answers

SOURCE: Honeywell digital thermostat won't turn off ac.

The Honeywell CT87 thermostat is a normal round thermostat, not digital and may have a sub-base installed with it that has a two switches on it. One is for Fan (Auto or On)and the other is for Heat, Cool and Off. Make sure the Fan switch is in the Auto position and the other switch is in either the Cool or Off mode. If you continue to get cooling, you have a short in the thermostat wire or a stuck relay in th indoor or outdoor unit. To test this, while the unit is running; remove the round outer ring on the thermostat by pulling it straight off towards you. You will find 3 slotted head screws that hold the thermostat to the sub-base. These screws are located at the 3 o'clock, 7 o'clock and 9 o'clock positions. Turn these screws counterclockwise with a small head screwdriver. They are held in place so should not fall and get lost. With the front of the thermostat removed from the base, the air conditioner should stop running. If the unit continues to run, you will need to have your A/C system inspected by a technician. If in fact your thermostat is digital, look to see how it is mounted to its sub-base and remove it. If the system stops, you may have a bad thermostat or the Fan switch is in the On position. Hopefully this will help.

Posted on Sep 12, 2007

  • 8 Answers

SOURCE: cooling temperature will not below 70

controllers more than likely on a memory lockout... kill the power and take the batteries out of it... leave it for 60 seconds and try again... unfortunately you are probably going to have to replace the controller, sorry

Posted on Jun 16, 2009

  • 6 Answers

SOURCE: Honeywell thermostat won't regulate temp properly

Is there a setting on your thermostat that makes the unit stay on for 10, 15, 20, 25 minutes after you reach set temp. You can change this setting by looking at your manual for the thermostat. Not sure if there is one for this thermostat but mine has one. Mine was running 15 min after set temp and making it cool down 2 degrees lower than set temp. Hope this helps.

Posted on Jun 25, 2009

heatman101
  • 43501 Answers

SOURCE: Honeywell RTH2310 thermostat temp variance

Hi,
Yes you can change that by change the number of cycles per hour that your t-stat looks from for youe furnace. Lower the cycles per hour number and it will increase the range.

You can see how to do it here

http://dl.owneriq.net/3/39359643-dfda-451d-bb81-828eecddd9fc.pdf

I hope that this will help you to solve your problem!

Thanks for using Fixya!!

Heatman101

Posted on Dec 12, 2009

  • 1 Answer

SOURCE: Honeywell CM921 Showing room temp at -24 degrees, How do I reset?

honeywell cm921 problem with red light flashing tenp not controling boiler can any one hel

Posted on Dec 15, 2009

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1 Answer

Am I able to adjust the 'hysteresis' of my digital thermostat?


Some thermostats allow you to change the differential value - that is how far below the heating (or above the cooling) set point before calling for heat (or cooling in the case of air conditioning). The built in 1 degree differential setting provides the most even temperature in the space at the expense of more frequent furnace firing and stopping. Many people prefer this mode as opposed to allowing wider swings in temperature for less frequent furnace firing and stopping. If you wish to change this setting, you'll need to replace the thermostat as it is not user adjustable in this model.

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How do i adjust AC temperature variance on a Honeywell TH5220D1003 thermostat


If you are talking about the difference between heating mode and cooling mode and the room setpoint, you can not change it. It comes from the factory with a 3 degree difference. In other words if you raise the heat setpoint until it is within 3 degrees of the cooling setpoint, for every degree you raise the heat setpoint the cooling will raise a degree.
About all you can do is increase the distance between the heat and cooling setpoint. To do this either lower the cooling setpoint to 3 degrees higher than the heat setpoint you want and then increase the cooling setpoint the desired setting. For example heat and cool setpoints are 67 and 70 respectively, and you want 65 and 73. Lower the cooling setpoint to 68 and then raise the cooling setpoint to 73. Now your heating will come on 3 degress lower than 68, the 65 you wanted and cooling will come on at 73. Remember, the thermostat new setpoints will turn on the cooling at 75 and turn back off at 73 and heat will turn on at 63 and turn off at 65.
You can perform the same using the heating setpoint, just have to look at it backwards. If you need to lower the difference I recommend a 8000 series thermostat. They are the most functional thermostat that Honeywell makes, be in mind they are about 3 times more expensive and many of the setting require a well trained tech to interpret and set properly.
Hope this helps.

Aug 24, 2014 | Honeywell Th5220d1003 Non-programmable...

1 Answer

Our thermostat has "HOLD" on


Hi, Either push the program or resume program button... or on some you need to push the hold button again to take the hold off... Check the manual if all of this does not work... but the t-stat may be fried...

Here is a tip that tells you how to get a manual for most any Honeywell productonline...

Manual Honeywell How to Find Honeywell Manuals

heatman101

Jul 24, 2011 | Honeywell Electronic Programmable...

1 Answer

At what temperature do I program the thermostat for a comfortable cooling(at how much do set the cool and h ow much should I set the heat). Thanks for your help


Normal settings are heat 70 and cooling 74 to 76 I like 76 if your not active its fine. They say the every degree above 70 heat cost additional 5%.

Jul 02, 2011 | Honeywell Programmable Thermostat Heater

1 Answer

Fryer was working before being cleaned but a cook started it up without the oil now nothing will work?


Hopefully it has kicked out on high limit thermostat. It depends a lot ofn what type of control you have on your fryer. If they are all mechanical controls, the high limit may need to be reset. Open the front door of the fryer. There are two thermostat bulbs in the fryer. One goes to the thermostat with the temperature dial, the other to the high limit thermostat. Hopefully the high limit thermostat that you have will have a small red button sticking out. Push that button in and then relight the pilot as you would normally do. If your high limit thermostat does not have a red button it is an automatic reset high limit. When the fryer pot cools below 300 degrees it should reset itself. If you have electronic computer controls on your fryer you will have to reprogram your thermostat settings.

Sep 08, 2010 | Pitco Frialator 35CD Deep Fryer

1 Answer

My honeywell t87n is adjusting the heat setting by


This sometimes happens over time with some digital thermostats. The easiest solution is get a toothpick and hit the reset button. From there just set it as you normally would. That should solve your problem.

Hope this info was helpful to you. Good Luck!

Jan 29, 2010 | Honeywell Heat/Cool Thermostat

1 Answer

Cant get the settings to go past 70


Set the time and day and make sure you are in the "F" range.

Dec 30, 2009 | Honeywell Electronic Programmable...

1 Answer

Thermostat set at 74, but air conditioner won't turnoff


Need to reset the lever sensitivitie( behind the cover) to a lower setting.

Jul 22, 2009 | Honeywell Heat/Cool Thermostat

1 Answer

Cooling temperature will not below 70


controllers more than likely on a memory lockout... kill the power and take the batteries out of it... leave it for 60 seconds and try again... unfortunately you are probably going to have to replace the controller, sorry

Jun 16, 2009 | Honeywell Programmable Thermostat Heater

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