Question about Honeywell Programmable Thermostat Heater

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Heating not getting to the set temperature

We have Oil Heat. Temperature adjusted using digital Honeywell Thermostat (Model # CT3600A4444). The furnace comes on and shuts off frequently.

How do I resolve the issue. It is freezing inside.

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  • en1091 Dec 21, 2008

    I had heat on Aux. Heat, and the temp. dropped by 10 degrees inside overnight. Now I have it on Em. Heat waited for an hour. It did nothing. I want to get warm!

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Clean or replace your air filter

Posted on Dec 21, 2008

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My thermostat is set on 68 degrees and it shows room temperature is 68, but the furnace still kickson, Honeywell said it has a 1 degree difference. so what's the problem then?


Yes there is a one degree tolerance, in fact my heater just kicked on and it is set to 67 and the inside temperature reads 67. It is also a Honeywell.

Dec 28, 2016 | Heating & Cooling

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The Honeywell TH811U1003 thermostat is a universal programmable thermostat that...


The Honeywell TH811U1003 thermostat is a universal programmable thermostat that gives you electronic control of 24V AC heating and cooling systems. It also has the capability to be used on 750mV heating systems

One of the best features of this thermostat is it’s big clear backlit display. The current temperature, the set temperature and the time of day are displayed at all times. Simply touching the screen also activates the back light feature.

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This thermostat has a menu programming guide the helps you through the process of setting up your schedule. You are able to select multiple days and customize the thermostat for any kind of unique schedule you may have. This thermostat also let’s you take it off the wall and still be able to program it. This lets you watch TV and program it at the same time.

f50b51b.jpg

There are built in backups that will hold the time for you if the power goes out. This t-stat will also update for daylight savings time. There are HOLD features that allow you to modify your program and hold it and then go back to the original.

Change reminders that are built in include the air filter, UV light, humidifier service and of course the batteries of the thermostat. The blower of you furnace can also be programmed to run extra to help increase the air quality in your home.

If you decide you want to know the outdoor temperature you can purchase an additional sensor and then hook it to you thermostat. The outdoor temperature will then be displayed on you thermostat. This feature also gives you the capability of using the sensor to monitor indoor temperatures remotely.

This thermostat will keep you very comfortable as the variation typically in temperature from set point is less than 1 degree F. The thermostat after a period of time learns the characterizes of the way the house or building heats and cools and then adjusts to get the most efficient operation of the heating or cooling system while maintaining a very close temperature tolerance.

By changing a few of the parameters in the thermostat this can be can be configured for either single stage conventional heat/cool systems or any single stage heat pump system.


Specifications of the Honeywell TH8110U1003 Thermostat
  • Description: VisionPRO Touchscreen 7-Day Programmable 1 Heat/1 Cool
  • Conventional and Heat Pump Thermostat
  • Application: Gas, Oil or Electric; Heat Pump; Millivolt
  • Programmability: Universal Programming from 7 Day to Non-Programmable
  • Changeover: Auto or Manual
  • Color: Premier White
  • User Interface: Touchscreen
  • Switch Positions (System): HEAT-OFF-COOL-AUTO
  • Switch Positions (Fan): AUTO-ON
  • Power Method: Battery or Hardwired
  • Terminal Designations: R, RC, C, W (O/B), Y, G, S1, S2
  • Dimensions (in.): 4 9/16 in. high x 6 in. wide x 1 1/4 in. deep
  • Mounting: Horizontal
  • Electrical Ratings: 20 to 30 Vac
  • Frequency: 60 Hz. 50 Hz
  • Setting Temperature Range (F): Heat: 40ª F to 90ª F. Cool: 50ª F to 99ª F
  • Setting Temperature Range (C): Heat: 4.5ª C to 32ª C. Cool: 10ª C to 37ª C
  • Differential Temperature (F): 1ª F
  • Differential Temperature (C): 0.5ª C
  • Stages: Up to 1 Heat/1 Cool
  • Outdoor Sensor: Yes, optional outdoor or indoor remote
  • Remote Sensor: Yes, optional outdoor or indoor remote
  • Sensor Element: Thermistor
  • Currents (Heating): 1.0 A running
  • Currents (Cooling): 1.0 A running
  • Currents (Fan): 0.6A running
  • Operating Humidity Range (% RH): 5 to 90% RH, non-condensing
  • Comments: Selectable to and Heat Only or Cool Only
  • Features: Screen lock


on Jan 15, 2010 | Hardware & Accessories

Tip

Th811u1003


The Honeywell TH811U1003 thermostat is a universal programmable thermostat that gives you electronic control of 24V AC heating and cooling systems. It also has the capability to be used on 750mV heating systems

One of the best features of this thermostat is it’s big clear backlit display. The current temperature, the set temperature and the time of day are displayed at all times. Simply touching the screen also activates the back light feature.

This thermostat has a menu programming guide the helps you through the process of setting up your schedule. You are able to select multiple days and customize the thermostat for any kind of unique schedule you may have. This thermostat also let’s you take it off the wall and still be able to program it. This lets you watch TV and program it at the same time.

There are built in backups that will hold the time for you if the power goes out. This t-stat will also update for daylight savings time. There are HOLD features that allow you to modify your program and hold it and then go back to the original.

Change reminders that are built in include the air filter, UV light, humidifier service and of course the batteries of the thermostat. The blower of you furnace can also be programmed to run extra to help increase the air quality in your home.

If you decide you want to know the outdoor temperature you can purchase an additional sensor and then hook it to you thermostat. The outdoor temperature will then be displayed on you thermostat. This feature also gives you the capability of using the sensor to monitor indoor temperatures remotely.

This thermostat will keep you very comfortable as the variation typically in temperature from set point is less than 1 degree F. The thermostat after a period of time learns the characterizes of the way the house or building heats and cools and then adjusts to get the most efficient operation of the heating or cooling system while maintaining a very close temperature tolerance.

By changing a few of the parameters in the thermostat this can be can be configured for either single stage conventional heat/cool systems or any single stage heat pump system.

Normal 0 MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman";} Specifications of the Honeywell TH8110U1003 Thermostat
  • Description: VisionPRO Touchscreen 7-Day Programmable 1 Heat/1 Cool
  • Conventional and Heat Pump Thermostat
  • Application: Gas, Oil or Electric; Heat Pump; Millivolt
  • Programmability: Universal Programming from 7 Day to Non-Programmable
  • Changeover: Auto or Manual
  • Color: Premier White
  • User Interface: Touchscreen
  • Switch Positions (System): HEAT-OFF-COOL-AUTO
  • Switch Positions (Fan): AUTO-ON
  • Power Method: Battery or Hardwired
  • Terminal Designations: R, RC, C, W (O/B), Y, G, S1, S2
  • Dimensions (in.): 4 9/16 in. high x 6 in. wide x 1 1/4 in. deep
  • Mounting: Horizontal
  • Electrical Ratings: 20 to 30 Vac
  • Frequency: 60 Hz. 50 Hz
  • Setting Temperature Range (F): Heat: 40ª F to 90ª F. Cool: 50ª F to 99ª F
  • Setting Temperature Range (C): Heat: 4.5ª C to 32ª C. Cool: 10ª C to 37ª C
  • Differential Temperature (F): 1ª F
  • Differential Temperature (C): 0.5ª C
  • Stages: Up to 1 Heat/1 Cool
  • Outdoor Sensor: Yes, optional outdoor or indoor remote
  • Remote Sensor: Yes, optional outdoor or indoor remote
  • Sensor Element: Thermistor
  • Currents (Heating): 1.0 A running
  • Currents (Cooling): 1.0 A running
  • Currents (Fan): 0.6A running
  • Operating Humidity Range (% RH): 5 to 90% RH, non-condensing
  • Comments: Selectable to and Heat Only or Cool Only
  • Features: Screen lock

on Jan 15, 2010 | Heating & Cooling

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.

Nov 02, 2015 | Honeywell RTH6350D1000 5/2Day Prog...

1 Answer

Can't increase the heat on the thermostat


Instructions1 On nearly every Honeywell thermostat, the heat setting can be increased by simply pressing the HEAT option or AUTO and using the arrow keys to adjust the setting higher or lower until the desired temperature is reached.
2 To set an automatic heating schedule for Wake, Leave, Return and Sleep, press the SCHEDULE button, then EDIT.
3 Select the current day and use arrows to select the time and temperature for Wake. For example, if you typically awake for work at 6:00 a.m. and want the heat to come on, use that as your Wake time and adjust the temperature to suit.
4 Select the day and use arrows to select the time and temperature for Leave. Since you will be leaving the home empty for several hours, this setting will allow the thermostat to lower the heat until your arrival back home.
5 Select the day and use arrows to select the time and temperature for Return. This is the time and temperature that you will choose for returning home from work and may want the heat on to warm the house for your arrival.
6 Select the day and use arrows to select the time and temperature for Sleep. Set the time you normally go to bed. The thermostat will automatically adjust itself to your selected temperature at that time.
Thanks

Apr 01, 2012 | Lakewood 2096ET Oil Filled Radiator Heater

1 Answer

I had a new thermostat installed was not working correctly and was replaced with another. This one is even worse than the other. To get the furnace to come on the house temperature on the thermostat reads...


Hi, even though Honeywell do make good products, I would return this heat only stat and replace it with a heat/cool stat even though you have heat only. If you want to stay with the mechanical style stat, I would go with a white Rodgers 1F56-444 mechanical stat. Inexpensive but good quality. When you wire one with cooling on it, you will see on the new stat terminals such as Rh and Rc, W, G, Y, and some with O and B. The Rc and Rh will have a jumper wire connecting the two. Leave it on! If you have 2 wires maybe a red and white, connect the red to either one of the R terminals as the are connected. The white will go to W for heat. If you have 3 wires and the third is green, it will go to the G terminal. If not, no worries. In cooling the Y is for compressor, G for fan and Heating W for heat. Red is you're 24 volts. Get rid of that stat and get a good one. If you do go with the white Rodgers and you find the temperature does not match the room temperature on the cover of the new stat, you can adjust the needle pointer on the cover of the new stat to the exact room temperature. This is what I recommend to you. It will solve your headaches. There is a small screw slot on the back cover for this adjustment.
Keep me posted on the out come.
Sincerely,
Shastalaker7

Jan 12, 2010 | Honeywell CT87B ROUND HEATING&COOLING...

1 Answer

My round Honeywell T-87 on the main floor(middle) of the house has no ON/OFF switch. It controls the temp of that level of the house and even though it is set at 60, the temp is way too high and reads 74....


What you are describing is the Heat Anticipator. It is a small resistor that helps the thermostat from overshooting the set temperature by heating up and shutting off the thermostat just before your set temperature. I don't think that is related to your over heat. 14 degrees is a lot and the Heat Anticipator will only effect it 4 or 5 degrees. I would remove the thermostat and check if there is a call for heat. If so, you have a shorted wire. If not, replace the thermostat.

Dec 30, 2009 | Honeywell Programmable Thermostat Heater

2 Answers

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

Dec 12, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

Incorrect ambient temperature on Honeywell Model RTH221B


Check in your manual for the thermostat. By pushing a combination of buttons you can get into the advanced installer menu. From there you can make an adjustment to correct the temperature.

Nov 11, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

Thermostate temperature setting wrong


Are you saying that the temperature over-shoots it's setting by 5 degrees? If so and if the thermostat has an inticipator device in it you can adjust it. After removing the cover on the thermostat, look for a little brass triangle on the lower right hand side. There will be a scale with numbers on it and they are very hard to see. This device heats up prior to shutting off the thermostat so it will not over-shoot by more than a few degrees. Move the brass triangle either up or down and let the heater cycle a few times. If the temperature swing gets worse, go the other way next time.

If the thermostat is not heat inticipated, there will be a small "Dip" switch where you can adjust to a specific degree of under-shoot.

Visit the Honeywell website and you can pull up the installation/owners manual for your model. www.honeywell.com

Nov 27, 2007 | Honeywell CT87B ROUND HEATING&COOLING...

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