Question about Honeywell TH4210D1005 Heater

1 Answer

Blower continues to after reached temp

I have heater set to 72 after it warms to 72 blower continues to blow but cool air once temp goes below 72 it starts to blow hot air again

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Honeywell Master
  • 1,033 Answers

Sounds like either a short between the G and R t stat wires or the relay in the control board is faulty. Easy way to check is remove the G wire from G terminal on the control board, if the blower stops, there is a short in tje t-stat wiring, if it continues to run a new control board will be needed since the relay is part of the board.

Posted on Jan 08, 2013

  • tdhensley_20
    tdhensley_20 Jan 08, 2013

    I Removed the green wire and the blower went off.....thank you

×

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad
hotuna
  • 288 Answers

SOURCE: Honeywell thermostat....Home cooling/heating system....Chromotherm III

On heat pumps, the normal setting is simply an air conditioner working in reverse. The EMT or AUX heat is a supplemental heating system using electric heating elements instead of the hermetic (compressor) system. As far as why the regular heat does not work it can be one of many things. low freon charge. reversing valve not functioning. The defrost cycle not working. Take your pick. you may want to call a service man to repair it as the electric (EMT) is not as efficient.

Posted on Nov 04, 2007

  • 334 Answers

SOURCE: Honeywell RTH230B a/c problem

if you set the thermostat on 70 and your house won't get ant cooler than 72, there is a problem with your system,not your stat. I'm thinking you are low on refrigerant if it is somewhat working. when the unit is running, if you can get your hand on the larger refrigerant line under the black insulation, it should be cold, about 55 degrees.

Posted on Jun 19, 2009

  • 139 Answers

SOURCE: indoor temp doesnt go to my punched in setting of 68 on therm

if it is around 93-97 degrees outside,thats all the cool your going to get

Posted on Jun 24, 2009

  • 22 Answers

SOURCE: Bought 44155c hunter thermostat air won't turn on.

If unit worked before you tryed changing t-stat then its possible the t-stat wires are shorting each other out.take t-stat back off cut back wires a good 6 to 10 inches or if you dont have that much wire to play with just cut back as far as you can and make sure there is no bare wire touching each other ,then just to test unit to make sure its working ok twist yell.,red,green together this should bring both units on and should blow cold.if this works up to this point on the new stat read directions closely there might be a jumper wire in the stat that needs connected usually from y1 to w1 you would install a jumper wire .see if this helps if not write back i have 1 other solution.i hope this helps

Posted on Sep 15, 2009

Therinnaiguy
  • 1420 Answers

SOURCE: Furnace cuts off before reaching set temp.

You can make sure it is not the thermostat by crossing or jumping the R and W terminals (or associated wires) together. This will keep the furnace calling for heat. As it is approaching set temperature, get in front of the furnace and inspect the air filter to make sure it is clean, watch the control module for any error codes that may be turning off the system prematurely.

On a call for heat, the 24 volt thermostat sends a signal to the control module. The control module will indicate a call for heat with a light on the control either blinking or remain solid depending upon model. The inducer (exhaust) blower will purge all gasses from the furnace and pressurize a pressure switch. Once the pressure switch tells the module to continue, the electronic ignition will energize and send 120 volts to the igniter. The igniter will glow and you will be able to see it if viewed thru the small inspection port. Once the igniter gets hot enough, it sends a signal to the module opening up the gas valve (24 volts). Either a pilot will come on or the burner tube will ignite then spread the flame to all burners. Lastly a safety sensor will be looking for a certain temperature within a few seconds and the furnace will continue to operate and the room air blower will turn on in a minute or two.

What could go wrong? The unit will not run if there is no signal from the thermostat (bad thermostat or broken wire), the control module does not sense a signal from the thermostat (bad control), the inducer does not energize (bad motor), the pressure switch does not close (blocked vent piping, bad switch, plugged condensate hose), the igniter does not energize (bad control, bad igniter), the gas valve does not open or there is no gas (bad gas valve, broken wire, no gas), the pilot does not light (dirty pilot), the burner does not light (bad burner, plugged orifice, not enough combustion air), the flame does not spread to each burner (bad flame spreader, dirty flame spreader, more bad burners), the flame safety sensor does not detect flame (dirty or bad flame spreader, bad flame sensor, broken wire, bad control), or the room air blower does not energize (bad fan motor, bad control).

Posted on Mar 07, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

3 Answers

Engine tepmrature goes up or down when i turn on the heater


That is pretty much normal, the heater blower fan acts like the radiator does and helps cool the water passing through it by extracting the heat from it. then once the car inside temp warms up it goes back to normal. Nothing to worry about.

Jan 28, 2014 | 2004 Ford F150

1 Answer

Blower control


Sounds like a thermostat and/ or the system is low on coolant.
Its probably not going to reach 200 degrees when the outside air temp is below freezing, but you should get plenty of heat if the system is working correctly.

Jan 23, 2014 | Pontiac Grand Am Cars & Trucks

1 Answer

Heat goes in and out and the temp gauge goes up and down


Your temp sensor has nothing to do with your heater. The temp sensor needs coolant in order to work properly. So first check the coolant level because if it is low your heater will act the way you describe. Once the coolant gets low enough the heater will blow cold. Another possibility is the radiator cap. After the engine has warmed up it expands when it cools down it contracts. As it is contracting if the cap is weak air can be drawn into the system and cause air pockets to form and will cause the same problem

Feb 09, 2013 | 2000 Pontiac Grand Prix

1 Answer

Heater doesnt work


To troubleshoot this types of problem,click the link below :---
Car heater blowing warm, but not hot air?http://schematicsdiagram.blogspot.com/2011/12/car-heater-blowing-warm-but-not-hot-air.html

--------
Engine Overheats and heater blowing cold?

http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

---------
Heat blows cold on drivers side and hot on passenger side?

http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html

-----------
No heat on car? http://technoanswers.blogspot.in/2012/02/no-heat-on-oldsmobile-silhouette.html

------------
Heater blows intermittently and temp gauge goes erratic?

http://technoanswers.blogspot.com/2012/01/heater-blows-intermittently-and-temp.html

------------
Heater blows cold?

http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html

---------
Heater/AC blower motor not working?

http://technoanswers.blogspot.in/2012/02/heaterac-blower-motor-not-working-on.html

------------
A/C, heater, defroster fan, not working? http://technoanswers.blogspot.in/2012/02/ac-heater-defroster-fan-not-working.html Heater problem?

http://technoanswers.blogspot.in/2012/02/heater-problem-on-isuzu-trooper.html

---------

This will help.Thanks.

Mar 27, 2012 | 1994 Volvo 960

1 Answer

Fan runs long after room reaches desired temp. heat goes off and fan continues to blow cold air, have a protech 520 thermostat


Is your 'Heater' you are talking about-- A furnace-- with a burner and a blower?

Either way-- We need to adjust a control that determines WHEN THE FAN RUNS--

Most furnaces have a section where the heated air collects, and there has to be a sensor in that chamber, that senses when that air is warm enough to circulate around--- and when the burner shuts off, the air in that area cools down, and the sensor should shut off the fan-

Can you find the Heated air area?-- and can you find a temperature control in that area?-- Can you adjust the control, so that it shuts off the fan when the air temp drops to 100- to 120 degrees F...

Tell us more about the type of furnace/heater we are workig with, so I can better help you-

Tell us more

Mack B

Jan 18, 2011 | Heating & Cooling

1 Answer

Thermostat not registering on auto when below temp set. Have to set fan to on before will blow; can hear pilot light kicking on?


This could actually be a couple of things. When below set temp does the unit turn on (ie produce heat), and the blower just never starts? If that is the case then the air coming from the registars will be cool to cold. This would indicate a problem with the "heating" side of the system. If the air from the registars is cool to warm, then it is a problem with your blower motor. Turning the switch from Auto to On, changes the blower from Low speed (used for heat) to High speed (used in cooling). The first thing to do, is to isolate which side of the system is failing, then troubleshoot from there. Hope this helps

Jan 15, 2010 | Heating & Cooling

1 Answer

AC blown warm air


This one is a difficult one to say. You could have a bad ac unit on the cars engine. Also when it goes back to 72 degrees your car is just displaying the temperature inside the car one of the features of a digital adjustments on these types of cars. Also you could have a leak and therefore not getting the cold air you wanted.

Jun 17, 2009 | 2000 Mercedes-Benz CLK

1 Answer

A 1979 Colman RV furnace. Blower shuts off shortly after burner shuts off leaving a hot heat exchanger. After 15 seconds blower comes on again blows for 10 seconds shuts off comes on in 15 seconds blows...


The fan limiting switch is acting up. It should stay running until lower temp is reached. It will cycle until the temp stays below or at the low setting. Limit switches are adjustable.

Jun 09, 2009 | Coleman Propane Forced Air Heater...

1 Answer

Heater keeps cutting off as if it reached the set temp.


sounds like its in defrost mode and the electric aux heat is not working

Feb 20, 2009 | EdgeStar Portable Air Conditioner Heater

1 Answer

BLOWER CONTINUES TO BLOW COLD AIR AFTER REACHING DESIRED TEMP.


There is a little switch on the circuit board. Look closely at the wiring diagram and it will indicate which switch to adjust. If not, review the operating manual for details.

Nov 24, 2008 | Goodman GMS90703BXA Heater

Not finding what you are looking for?
Honeywell TH4210D1005 Heater Logo

158 people viewed this question

Ask a Question

Usually answered in minutes!

Top Honeywell Heating & Cooling Experts

Bill Long

Level 3 Expert

587 Answers

paulcarew

Level 3 Expert

2517 Answers

Brandon Berry
Brandon Berry

Level 2 Expert

407 Answers

Are you a Honeywell Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...