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

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Thermostat inside temperature changes to slow pro th4000 series honeywell

Honeywell thermostat pro th4000 series has a slow temperature change notification. how do you account for old style anticipators.

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SOURCE: changing a room thermostat a potterton to honeywell t6360

I think I've done it - but don't take this as absolute truth.
For the Honeywell T6360B the original Potterton wiring should be rewired as follows:
Brown [Live] goes to terminal 1; Blue [neutral] goes to Terminal 2 and the yellow/green [which is not an earth but a switched live - i.e. gives live to the heating system when the thermostat clicks in] goes to terminal 3.
Obviously all done with the power isolated and when it was switched back on we had heating again :o)
It's been on over two hours now and all seems fine.

Posted on Feb 16, 2008

boanhtgclg
  • 34 Answers

SOURCE: program manual for honeywell thermostat model T8700C1005(1)

try holding the up and down arrow, down, at the same time, see if the time or temperature starts flashing. also the cover should lift up so you can change from heat to cool, there should be a program button or a set button to hold down. all you should have to do is adjust the time and temperature for the 4 settings during the week and the two on the weekend. should be really easy, let me know if you need some more help

Posted on Nov 13, 2008

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SOURCE: I had an old thermostat that i had to change need wiring diagram

both thermostatats will have terminal designators R,W,Y,G, possibly O/B, C, W1,W2, Y1, Y2, etc.
Simplest method is to remove wires from old stat one at a time. mark where they came from and then install at same desinated terminal on the new t-stat. Hope this helps. be sure to shut off power supply to the unit (furnace) first. The wire coming to the R (RH,RC) terminal is the 24 volt a/c hot, all others are feeding back to perform given function.

Posted on Dec 23, 2008

  • 3 Answers

SOURCE: wiring diagram to connect programmable Thermo to Heat Pump

I don't know if this will be helpful or not, but I just installed a new Honeywell and the Honeywell customer service guy helped me get the wires done correctly. The number is 800-468-1502.

Posted on Jan 05, 2009

  • 9 Answers

SOURCE: i have a pro th4000 series honeywell programmable

this thermostat does not have a deadband option, the only other thing you can do is set the program for a different temp. the cycles per hour just restrict how many times the unit comes on.

Posted on Dec 16, 2009

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I have Honeywell Pro TH4000 series. The fan wiil not come on what do i do


Depends on what type of heat you have...gas, oil , electric, heat pump? Make sure it is the right thermostat for your heat source. Some thermostats have a switch on the back for fuel or electric.

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I have Honeywell Pro TH4000 series. The fan will not come on what do i do


It really depends on the circumstances. Are you just trying to turn the fan to the "ON" position from the "AUTO" position? If that is the case, there will be a problem with the thermostat, wiring to the thermostat, or the unit itself. That would sum up a "thermostat" problem for the fan not working. If your trying to call for HEAT/COOL and the fan isn't coming on, that is another issue.
You can try to see if the G terminal is hooked up on the thermostat, that's going to be your "FAN" terminal. If it is connected, you will have to go to the unit and see where it is connected. At this time, we would need to know the model and manufacturer of the unit. Thanks, hope it helps.

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I just got a new Honeywell Utility Pro Thermostat. The digital temperature gauge seems very sensitive which results in the unit turning the furnace on and off for very short periods; much shorter than my...


Sounds like you also have a high efficiency furnace like mine.
Here is a procedure to slow down the number of cycles you are experiencing.
1. press System
2. press and hold buttons 3 and 5 on the bottom of the screen. (there should be 7 buttons displayed)
3. set code to 240
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1 Answer

Honeywell TH8320u Vision Pro 8000 Digital keeps calling for heat


Hi,
If the thermostat is not over shooting the temperature than don't worry about it.
These thermostats are very sensitive and will turn the heat back on even before the degrees drop on the display. Often they will shut down before the display changes also. You can change the sensitivity of the thermpstat if you read the directions and change the cycles per hour to a less number. There is an installers program in there that you need to push a combiunation of buttons to get too. The instructions tell you how to do that also.

Hopefully you did not throw away the instruction manual for your t-stat.. :-)

Heatman101

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1 Answer

I have a pro th4000 series honeywell programmable thermostat and its for system type th4110d electric heat with ac how do i set the thermostat to drop a few degrees before the heat turns on right now i got...


this thermostat does not have a deadband option, the only other thing you can do is set the program for a different temp. the cycles per hour just restrict how many times the unit comes on.

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Check to see if you have power at the furnace. You thermostat is powered by 24vac coming from the furnace. You should have power on the "R" terminal.

Oct 05, 2009 | Honeywell Electronic Programmable...

1 Answer

Wiring diagram to connect programmable Thermo to Heat Pump


I don't know if this will be helpful or not, but I just installed a new Honeywell and the Honeywell customer service guy helped me get the wires done correctly. The number is 800-468-1502.

Jan 05, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

Honeywell th4000 thermostat - fan won't come on. The system set to cool and the temp is set lower than room temp.


That problem is seldom the thermostat.check all fuses and breakers....if they're ok,its prolly an internal problem to the furnace.

Aug 24, 2008 | Honeywell Heating & Cooling

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