Question about Honeywell Programmable Thermostat Heater

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The thermostat turns the heating unit off and the fan continues

The Thermostat model no. is TH3110D1008-0610
If I turn the thermostat to the off position for about 2 to 4 hours and turn it back on after that time, it performs nornal for several hours. Then the furnace goes of and the blower keeps blowing cold air. HELP

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Check your furnace filter to make sure the furnace is not over heating. what brand of furnace do you have and how old is it?Have you changed filter to a different kind last time you changed it?

Posted on Jan 17, 2009

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How do I wire a Honeywell thermostat


Can I start by saying I am not in anyway saying to do this alone it is dangerous but if u must follow each step start by being safe shut off the breakers good luck here to help
Step 1
Turn the air conditioning and heating unit off by flipping the appropriate circuit breaker. Test the unit to make sure it's off by turning your existing thermostat to the "On" position and seeing if it turns on. Wiring a Honeywell thermostat when the circuit breaker is on could cause you to blow the transformer that powers the HVAC unit Step 2

Connect the red wires to the thermostat RH, thermostat RC or thermostat R terminal. The thermostat RC terminal has a jumper wire between thermostat RH and thermostat RC. The thermostat R terminal operates both the heating and cooling units, and contains an internal jumper wire. Basically, your red wire on a Honeywell thermostat is the hot wire that run. Step 3

Run the green wire to the thermostat G terminal. The green wire controls the relay that operates the blower, and it controls the fan. Step 4

Control your air conditioning when you connect the yellow wire. It connects to the thermostat Y terminal Step 5

Hook the white wire to the thermostat W terminal to control the heating unit

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1 Answer

What causes a fan not to come on


If it is a two wire thermostat there shpuld be 24volts across the leads. If it is heat only this is what tuns on the unit.

Jul 13, 2014 | Honeywell Programmable Thermostat Heater

1 Answer

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.

Dec 08, 2013 | Honeywell Programmable Thermostat Heater

1 Answer

After heating cycle, the furnace fan doesn't shut off


Be sure the continues run switch is not turned on at the thermostat

Nov 26, 2013 | Honeywell Programmable Thermostat Heater

1 Answer

I cannot get my heater to shut off when it get to hot in the house , i have it on 60 and auto and still running. I have to turn it off.


sounds like maybe you have a wire touching somewhere in the thermostat or the thermostat itself is failing, are you turning the power off to unit or turning the thermostat to off .... if you are turning power off then try this frirst turn you thermostat down as low as it will go a wait 1 minute 30seconds to see if it goes off if not then (at thermostat) remove the wire hooked to "w" terminal which if done correctly should be a white wire ... wait a few minutes and see if the unit shuts down ..if it does not see if you are still blowing hot air as the fan may just be running...if the heat portion stops ,but you still have fan then remove the "g" wire also and wait about 90-120 seconds and see if the fan goes off... if all goes off then either you thermost is still calling heat for some reason or you have one of those wires touching the "r' wire somewhere making the call for heat....
***** if you are turning the thermostat to off and the unit is going off then you most likely just have a bad thermostat and for some reason one of the relays are stuck on thermostat

Jan 13, 2011 | Honeywell Programmable Thermostat Heater

1 Answer

Honeywell Chronotherm iv fan keeps running even when heat and cool turned off. How do I turn it off?


Assuming you have the fan switch of your thermostat in AUTO, it sounds like a stuck Fan Relay. If the fan relay is stuck, your fan will continue to run as long as there is line voltage being fed to your unit. This relay could be an independent component or it could be an integral part of your control board. Have an experienced, qualified service technician check it out.

Mar 19, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

I have a Honeywell programmable thermostat with a York high efficiency furnace. To turn the heat on, the thermostat "clicks" and cycles the furnace through startup (warm the fire starter, turn on gas,...


Well, it is a computer, and they all glitch, now & then, you say it clears with a power off, and thus resets it, It maybe a thermostat, flaking out, they do that, but the 6'o'clock, thing being the "Or" that sets it apart, I wonder if it isn't just a faulty control unit, as two together is too many, for a single cause, now, it sort of points there, but also, may sound silly but first, of there is any, Check your backup battery..

Feb 26, 2010 | Honeywell Programmable Thermostat Heater

1 Answer

Honeywell thermostat TH6110D1021. Blower comes on


Hi, You are right, fan is on a time delay in the heating cycle, and after burners fire that is when this delay comes into play. You have a preset factory temperature that determines the cycle on time for the fan, and the off time after the burners shut down also. This will not be in the thermostat, but in the fan/limit control the is mounted on the face of the furnace, with a probe inserted into the fire box.Depending on how old or new this unit is, will depend on the type control you have.It may be just a high limit switch, or the 1st I mentioned.If so, It rotates in the burner as the temperature rises, to turn the fan on and off.Disconnect power, remove cover, and 2 screws.Slowly remove the control and gently clean the probe. Turn the dial if this one has it and you will be able to hear it click. This click is contacts closing to start fan operation.Reinsert and try again. If problem continues, you will have to replace it.They do tend to stick closed/on, in the heat cycle from time to time and a cleaning sometimes will solve this problem. Not knowing how old this furnace is and type, make it difficult to give you a correct diagnosis, so check this fan control as I have explained, and if your system is of a different type, please let me no so I can correct this problem. Sincerely,
Shastalaker7

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1 Answer

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1 Answer

Honeywell thermostat


make sure not turned on @ tstat to man ,also were you in the heat or cool mode when this occured .

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