Question about Honeywell Programmable Thermostat Heater

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My heating/cooling blower (not the outside unit but the fan in the garage) does not turn off, even when my Honeywell TH8000 is set on automatic. What can I do to have the fan motor shut off?

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  • TSandell Jan 25, 2009

    I have the same problem and am looking for a solution. Does anyone know a tech support number for Honeywell? If so please send to pctinas@yahoo.com



    Thanks

  • Anonymous Feb 21, 2009

    Same problem. Just change my Termostat thinking it was defective. The blower will not shut off on auto.

  • knocknow Mar 01, 2009

    Inside blower fan runs all the time on heat, but cycles on cooling. The unit warmes up and shuts down but the blower stays runing. After a hour or so the unit goes back on and it warms the house and shuts off while the blower never shuts off.

  • Scott Magill May 11, 2010

    Is the fan in the on position on the thermostat? It sound like it is on instead of auto. What kind of heat system do you have? Is air hot or cold ? When you turn heat down does fan still run? You can disconnect green wire on back of thermostat. I this a new thermostat that was just installed if so wires are not connected wright. If not you might need new one. You could have a problem with heater to. Does heater turn on when thermostat is turned up and go off when it reaches desired temperature?

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Try hard wiring your 24 volt that goes to the outside unit to the yellow wire coming back from your thermostat make sure the yellow wire is on the yellow terminal on the thermostat (honeywell) i have run into situations when this seemed to be the only thing that worked

Posted on Aug 25, 2010

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Hey, I purchased your Honeywell RTH2510 Thermostat, but I didn't even think to label the wires when I took the old thermostat off. Upon installation of the new Thermostat (2510) the Air Conditioning...


The connections that you really need to reference would be at the air handler itself. That would tell you which wires go outside to the heat pump and which wires go to the air handler. I can however give you some basics that may help.

Heat Pump Wiring
Terminals/Colors/Function
R- Red- 24v power supply. (Usually a jumper between RC/RH)
G- Green- Fan
W- White- Heat (Sometimes W1-W2, first or second stage heat)
Y- Yellow- Cooling (Same applies as above i.e. Y1-Y2)
C- Common (Most people use blue unless it is used for B terminal and sometimes cooling on older 4 wire systems.
B/O- Reversing Valve for heat pump. Either powered heating or powered cooling, depending on system installed.
Aux- Also used for heat.

Note: Considering that the installer had their own way to run all wires, use different wires, connections, etc. This is just a reference to common wiring in the field.

How the most common system is hooked up:
Thermostat:
Red wire goes to R terminal
Yellow wire goes to Y1 or Y2 terminal
Green wire goes to G terminal
White wire usually goes to W1 or W2 terminal
Orange or Black wire goes to B/O terminal
Brown wire usually goes to Aux terminal
Blue wire goes to C terminal, unless its being used as stated above.

This is without using a fossil fuel kit or zone control board.

Where do they go from the thermostat?
Red
goes to the air handler transformer or board and goes outside to heat pump to power low voltage controls.
Yellow wire goes straight outside to Y terminals on heat pump unless going to a board inside first.
Green goes to the air handler fan relay.
Common goes to the air handler and outside to heat pump.
Black or Orange will go outside to heat pump terminals for reversing valve.
White usually goes outside to heat pump,and inside to air handler. Will explain reason further down.
Brown will go to the air handler to the heat relay for the emergency heat.

On a call for heat, with a powered cooling system (more common).
The R, Y, and G terminals energize, sending a signal to start the blower and pull in the contactor outside. Note that the Y terminal is usually cooling, but since this is a powered cooling system, the reversing valve is not energized, causing the system to run in heat mode. If you have powered heating, the reversing valve terminal will energize also. Depending on thermostat, if you set the temp substantially higher than room temp, it may kick on the emergency/aux heat to quickly raise the room temp. On a call for emergency/aux heat, the R, G, and E/Aux terminals are energized, turning on the electric/gas heat instead of the heat pump. This comes in handy since the heat pump can only pull so much heat from outside before its not enough to properly warm the house, usually around 30 degrees outside temp. If you are running the heat pump and the system goes into "defrost", the outside unit will send a signal back to the air handler, through the white wire I mentioned earlier, to tell the emergency/aux heat to come on while it is in defrost mode, providing heat whenever needed.

Again, this is just a reference guide to some basic wiring, but hopefully it will tell you where the problem is or at the least, give you a good start. There are variables in which things can change the wiring like a zoning system or fossil fuel kit. Even then, you should be able to get pretty close. Hope this helps and Happy Holidays!

Dec 07, 2013 | Honeywell Programmable Thermostat Heater

1 Answer

I have a Honeywell A/C Unit, it's about 17 years old. The contactor melted so I replaced it with the exact one. Now the inside thermostat will not turn on(in cool or heat position) so I replaced that too...


See if there's any 24 volt control voltage. You can check it at the thermostat using a voltmeter set to ac. measure across the red wire and the common terminal. No 24 volts means a new transformer.

Aug 15, 2013 | Honeywell Programmable Thermostat Heater

2 Answers

HONEYWELL RTHL2310/RTHL221 THERMOSTAT AIR WILL NOT COMEON


Recheck your connections.The wire colors may not have been wired in the standard way when HVAC system was installed. I remember the instructions on my Honeywell thermostat(replaced mine about 2 months ago) stated that you should look at the wire LOCATIONS on the 'stat you're replacing and tag the wires according to this,not the wire color(too late in your case).You'll have to verify the wires.Disconnect them(don't worry about noting where they were as it's not right anyway).Using an A/C voltmeter,locate the hot feed to the 'stat(ground one lead of the meter at a nearby outlet and look for 24v on any of the wires).Tag it as "feed".Now,touch this to each wire until you find one that turns on the ventilation blower and tag it.Try the other two,one of them should turn on the outside A/C condensor unit(this is the A/C wire).The remaining wire's gotta be the furnace,but verify anyway.This should be enough to get you back on track(don't feel bad,the instructions in my 'stat confused me a little,even though I've replaced mine a couple times before).PS- I think the blower fan wire goes to the terminal with the little factory jumper wire-this is so you can set it up to run the same fan in heat or A/C(factory setup) or remove the jumper to run a seperate fan for each(highly unusual setup but possible)

May 25, 2012 | Honeywell Programmable Thermostat Heater

1 Answer

I have a Honeywell RTH230 thermostat. Ive read the manual top to bottom and have set the temperature to 70 degrees and followed all the directions. But my home is still almost 85 degrees, and even hotter...


i am assuming the unit is coming on and all... there could be an issue with the refrigerant in the system such as a leak.. need to make sure the indoor fan is coming on and also that the outside unit is coming on..there are 2 copper lines at outside unit that are refrigerant lines the larger one should be cool and the small line should be warm.. there also should be hot air blowing out of the outside unit... if this is not happening you have a problem with either the freon has leaked or the compressor may not be coming on inside the outside unit \

Jul 20, 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?


To turn the fan off, press the "fan key" until it says "auto". This will turn the fan off. When the programs scheduled, changes, the fan will go on again. You have to repeat the fan to "auto" each time the schedule changes.

May 12, 2010 | 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 TH8000 Vision Pro. It is controling a


Whats' so hard is the Honeywell thermostat has a built in 1@ differential. It is not adjustable.
You might ask your installer about a time delay relay installed in the furnace to break the thermostat heat wire (usually white wire).
Most time delay relays are 90 seconds. But that might be enough to reduce the furnace cycling.

Dec 15, 2009 | Honeywell Programmable Thermostat Heater

2 Answers

Non-deletable schedule in VisionPRO TH8000


The thermostat has a function called "Adaptive Intelligent Recovery".

This feature allows the thermostat to learn how long the furnace and air conditioner take to reach programmed temperature settings, so the temperature is reached at the time you set. For example: Set the Wake time to 6 am, and the temperature to 70°. The heat will come on before 6 am, so the temperature is 70° by the time you wake at 6.

You can turn off this function. Download the installation guide at the next link:
http://customer.honeywell.com/honeywell/ProductInfo.aspx/TH8321U1006
and look for funcion number 0530 Adaptive Intelligent Recovery. In this manual you also find the way to do a reset with the function number 0710.

I hope this solves your problem.

Nov 19, 2008 | Honeywell Programmable Thermostat Heater

1 Answer

Installing Honeywell RTH7000 - I have too many wires!


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

2 Answers

Honeywell VisionPro USER SETUP CODES OR INSTALLER CODE FOR TEMP RESTRICTION


You need to get into the installer setup. Download the installer manual from Honeywell or an on-line vendor and it has the installer codes to alter the maximum heat setting. Press the system button and then buttons 2 & 4 at the same time for 5 sec to enter the installer mode. I believe the code is 0600 and then you enter the max temp for heat setting. Press done and your done!. Try this link for the installers manual http://www.alpinehomeair.com/related/Honeywell_VisionPro_8000_%20Install_%20Instructions.pdf

Jan 21, 2008 | Honeywell Programmable Thermostat Heater

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