Question about Honeywell Programmable Thermostat Heater

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HONEYWELL T-STAT I REMOVED A HONEYWELL T-STAT TO REPLACE IT WITH A DIGITAL T-STAT BUT IT WAS DEFFECTED SO I PUT THE OLD ONE BACK ON AN NOW WHEN IT RUNS IN THE HEAT MODE IT NEVER SHUT OFF. IM WONDERING DID I CROSS WIRES OR WHAT

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  • JEWEL JACKSON Dec 21, 2008

    I DID I FOLLOW THE SAME EXACT WAY I'M JUST WONDERING DID I CROSS TWO WIRES CAUSE ONE WAS DISCOLORED THAT CAN PASS FOR WHITE OR DO I NEED TO RECALIBRATE THE T-STAT

  • JEWEL JACKSON Dec 21, 2008

    PLEASE HELP

  • poppydr May 25, 2009

    Honeywell T-stat costs how much

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It is always advisable to shut down the main swith to avoid further issues in replacing thermostat, if you follow the right color coding this should be no prob, unless otherwise it cannot detect the right temp then it will not stop until it reaches and senses the right temp.

Posted on Dec 21, 2008

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1 Answer

Im trying to change my old mechanical Honeywell stat for this digital one.


what is the brand and model of your old and new thermostats ?

Apr 27, 2016 | Thermostats

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I want to replace a Honeywell Q674L with a Honeywell RTH6580WF for my heat pump. Which wire is the common or C wire?


The old mercury Q674's didn't require a common terminal, so if there's not an extra wire in the bundle you'll have to fish one up... Inside the old Trane, there should be either a terminal strip with the appropriate terminal designations or possibly a bundle of color coded wires. If they are wires, originally they may have had individual tags on them, but if there are none, you're going to have to refer to the wiring diagram for the correct color for transformer common. Or... find the secondary of the transformer to determine the correct one, then extend it up to the new digital stat.

Apr 17, 2015 | Thermostats

1 Answer

Old thermostat has 2 wires. how to I wire my honeywell rth111/rth221? thanks, Rich


http://customer.honeywell.com/techlit/pdf/PackedLit/69-2060EFS.pdf this should be the instructions for that t stat. best to just look at which color came off what letter and replace back on that letter. you dont know if the last guy wired it right

Feb 13, 2011 | Honeywell Programmable Thermostat Heater

1 Answer

My honeywell thermostat is asking for heat but the furnace won't turn on.


The first thing i would do is to make sure the t-stat is good.One easy way to do this is to remove stat cover then remove the screws that hold it to the wall. Disconnect t-stat wires making sure you note location. There should be a red and white wire for heat so put these two together and if your furnace comes on then the stat needs replaced. If it does not you need to check further to make sure you have power to your furnace.If the furnace does come on with these two wires together the furnace will run non stop. Hope this helps you. Thank you

Jan 12, 2011 | Honeywell Programmable Thermostat Heater

3 Answers

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Jan 06, 2010 | Honeywell Programmable Thermostat Heater

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

Dec 28, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

How do i wire a potterton programable controller


Hi,

All you need to do is look at the wiring diagram on the back of the old room stat, you will have the following:

(normally wired with these colours)

OLD COLOUR CODING

Live (sometimes called common) - Red
Neutral - Blue
Switch Live - Yellow

NEW COLOUR CODING

Live - Brown
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Switch Live - Black

All you need to do is wire up the new stat with this in mind. (please note: if the wires are not colour coded like this then do not proceed and get an electrician)

Any problems or questions let me know

I hope this helps

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Apr 23, 2009 | Honeywell Programmable Thermostat Heater

1 Answer

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3 Answers

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fuanace may be oversized and is short cycling it heats up house to fast it is better when they run longer

Dec 06, 2008 | Honeywell Programmable Thermostat Heater

1 Answer

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check to see if the B terminal is on the new t-stat if connect to it , but this terminal refers to heat pumps and is normally use to energize the reversing valve on the outside unit and not used on ac units , but normally the tag O/B is the same terminal on therostats

Oct 26, 2008 | Honeywell Programmable Thermostat Heater

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