Question about Air Conditioners

1 Answer

Coleman furnace problem

On Heat mode, when blower motor comes on, cool air comes out of the registers and fan is noisy. I think the hi speed comes on instead of the low speed. there are three wires going to the blower motor, Red, White and black. All are connected to the terminal which are marked R W B correctly. Can anyone tell me how to correct this problem? Furnace is a Coleman reverse flow 5600 BTU DGAA 070BDTA Serial No.001115253

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has answered 20 questions.

  • Expert
  • 63 Answers
Re: Coleman furnace problem

Sometimes people replace the blower motors with a higher horse power. Has this motor ever been changed? I believe the original should be a GE motor

Posted on Jan 28, 2008

Add Your Answer

0 characters

Uploading: 0%


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


3 Points

Related Questions:

1 Answer

Can not get fan on to turn on. All else fine. heat only furnace. No air conditioning...only air circulation.I used to set it on "Cool" and "Fan On"and get air to circulate. Do I need new thermostat?

Since you have two thermostats that operate the heating unit and the fan, and the fact that neither will turn the blower on, I would suspect the furnace/ air handler. Turn the thermostat to heat and see if the heat and the fan comes on, if it does operate normally in heat, the fan relay or the high speed on the blower is most likely the culprit. (If the furnace is equipped with a circuit board, the fan relay is integral to the board, if it an older furnace it has a separate fan relay). If it does not operate normally in the heating mode, verify power to the furnace, see if the flame comes on, if it does: the fan motor, circuit board or the fan relay are most likely the cause. hope this helps!

Jul 20, 2015 | Air Conditioners

1 Answer

Nordyne furnace FEH017HA-04 the fan runs full force when the ac is on but half speed when the furnace kicks in

That is probably normal if it is electric heat to slow the air over the heating elements. Even some gas units do this. Check to see if the unit blower motor has wires for multiple speeds.

Oct 24, 2013 | Coleman Intertherm Nordyne Miller Furnace...

1 Answer

Bryant programmable thermostat doesnt keep the temp have to put it on fan instead of auto

My guess is that you have gas heat. If this is the case, sounds to me like your main control board or depending on age of furnace, fan controller is not working. With gas furnaces, it utilizes 2 fan speeds. High for cooling, & Low for heating. Your thermostat only controls the High speed - switches when you turn your fan on & when there is a call for cooling. The only other thing I can think of is it is possible that the Low speed windings on the blower motor are open causing it to not turn on. Most motors have 3 to 4 speeds & only 2 are used. Switch the heat motor wires in the furnace (on the control board) with one that is on a spare terminal.

Feb 21, 2013 | Bryant Cube Series 1 Stage Heat/ 1 Stage...

1 Answer

Auto fan does not start electric furnace

see this causes and fix it. God bless you
If the furnace won't run, check the electrical service panel for a blown fuse or tripped breaker. Also make sure the power switch on or near the furnace is turned on. Check the unit for a reset button and try it. Some units have a built-in breaker or fuse panel.
If there is not enough heat, raise the thermostat setting five degrees to see if it turns the unit on. If the unit still does not generate enough heat, check the comfort controls . Clean or replace a dirty filter, clean the blower assembly (see the Forced-Air Distribution Fix-It Guide), and make sure that all registers are open and not blocked.
If the furnace turns on and off repeatedly (cycles), clean or replace the filter; and clean the blower assembly (see Forced-Air Distribution Fix-It Guide).
If the furnace is noisy, make sure access panels are mounted and fastened securely; spray squeaking belts with fan-belt dressing and replace worn or damaged belts; adjust the blower belt; lubricate motor and blower oil ports.
If the element does not heat, refer to the Heating Element Fix-It Guide for guidance.

Oct 08, 2012 | Coleman Mobile Modular Home Electric...

1 Answer

In the heating mode, blower will not com on in auto but will come on in on mode at tstat

The furnace uses two different speeds. High for a/c (which is the "on" position of the fan switch) and low speed for heat. You could either have low speed of the blower not working or something wrong in the circuit board (if it has one). On the blower motor you may have several plugs that you could change the fan speed and your heat may start working. You will have to access the blower motor to find this out. Red color is low and black is high. Move the Red wire to another speed on the motor and see what happens.

Apr 14, 2011 | Air Conditioners

1 Answer

Flame comes on in burner. Fan in auto does not come on , Fan in manual does. I figure the switch to tell the fan the box is hot is bad ?

First of all what kind of furnace is this?? always post model and Manufacturer of furnace. This helps us techs. narrow the problems down ok. Next, It sounds to me like maybe the blower motor itself might have a bad winding it it, or not coming on in the heat mode. This is because when in heat mode the blower is in a different speed, and when you switch the auto/on sw on the t-stat it switches the blower to usually the high speed winding or (cool) speed which is usually the black wire on the blower motor. the heat speed is usually the red or orange wire slower speed for heat. check these first then you may have to go back to the furnace control board. and check if it is sending voltage to the fan motor itself.. hope this helps..
hvac tech..

Jan 20, 2011 | Air Conditioners

1 Answer

Outside ac unit operates but no blower. Fan "on" does not operate from thermostat. However "heat" works fine furnace and blower. ???

Go to furnace and shut off power, remove blower door compartment. Inside you will find a control board where thermostat wires are connected. Should look something like this:

R-Red Wire= Power
G-Green Wire= Fan
W-White Wire=Heat
Y=Yellow or Blue Wire=Cooling.

It sounds like you have a bad motor speed. So try this:

With Power Still Off, on the same control board there is a terminal usually marked Cool and Heat. There should also be a couple of terminals that are named park. The wires hooked to these are the fan wires..

Exchange the Heat and Cool wires on the terminal board. Put everything back together and try cooling again, if the fan comes on
then you have a burnt out motor speed. Go back to furnace and change
the heat and cool wires around, next if Cooling had the black wire hooked to it, put yellow or blue on Cooling and black to park.

Note: The reason why you put the blower door back on is because it
has a door switch that if not properly seated, you wont be able to power
up anything

Jun 22, 2010 | Air Conditioners

1 Answer

We have a coleman evcon furnace. The furnace runs constantly. It'll get to the temperature but then the fan doesn't quit and it only blows out cool air the the reset switch pops up and needs to be be...

It sounds as if your furnace is exceeding the limit tempperature of the manual reset switch. The coleman is designed for the fan to continually run when this limit switch is tripped in order to keep the heat exchanger cool.( it is a safety feature) afew things may be happening.
1. the manual limit switch( the one you have to push) may be defective.
2. The fan may be running at too low of a speed. Turn power off at circuit breaker. locate circuit board on the board there will be one terminal that says heat if the red wire from the blower is on it tthen you may need to up the speed. follow the wires from the blower to the board if it has multiple speeds then you can isolate the red and put the blue or orange on the heat terminal.
3. the board may have an adjustable fan on and fan off pin selector if it is set up to come on to long or go off to soon it may not be controlling the temp of the heat exchanger properly.
4. I would also suggest checking to see if the orifices and gas valve are set up for your sytem correctly.
these are just simple ideas let me know how things go.

Oct 15, 2008 | Air Conditioners

1 Answer

Carrier Weathermaker 8000Vs

This is nothing short of a circuit board fan relay of a bad motor.. to find out if the motor is good, unplugg the black & white wire , in which white =ground black=hi-speed 120volts and conect them to power -ground and see if the motor works..if does, then its the fan circuit board if not then its a bad motor...

Jul 18, 2008 | Carrier XHB123D X/Y Series Heat/Cool Air...

4 Answers

Air conditioner blower

From your discription... I would think you have a problem in the thermostat. Does the fan run in cool if you put the fan in the ON position. Some older t-stats have a jumper between terminals that brings the fan on in cool. You will need to find out if there is low voltage power between the green t-stat wire and common in the air handler. If you have a Gas furnace the fan comes on by a temp control also there is a door switch. If the door is off the door switch will be open. and no fan.

May 20, 2008 | Goodman CKL60AR60 Air Conditioner

Not finding what you are looking for?
Air Conditioners Logo

Related Topics:

167 people viewed this question

Ask a Question

Usually answered in minutes!

Top Air Conditioners Experts

Mike Butler
Mike Butler

Level 3 Expert

6674 Answers


Level 3 Expert

1033 Answers

Dan Webster
Dan Webster

Level 3 Expert

8147 Answers

Are you an Air Conditioner Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides