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My Goodman CPLE24-1 with air handler model AHF24 32TL+D-5 indoor fan is not running in heat mode auto?

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  • Thomas Woodburn
    Thomas Woodburn Jan 02, 2017

    Typically units run in a higher speed when heating than in cooling. And also a different speed when just fan on is selected. If i had to guess it sounds like the speed windings for heat is bad, meaning you need a new motor. Or you could switch the wires to a different speed. Fan on is the lowest speed, if youre brave turn power off and investigate

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  • 1,082 Answers

Was it working before and recently stopped? If not its a programming issue in tstat. If it was working now stopped its likely the speed wire for heat. Does it work in cooling? If fan not working at all you have a bad relay board. This can be bypassed with a switching relay. Green and common energizing the relay coil, high voltage being broke on "n.o." (normally open) terminals. Good luck

Posted on Jan 02, 2017

Testimonial: "Hello Thomas, it was working fine before. Now it works fine in cooling but not in Heat mode; when I selected Heat and set the temp higher than the room temp, the out door units kicks in but the indoor blower is not blowing. I have to select the fan to ON for the heat to come out from the vents? Thank you so much in advance!"

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1 Answer

Goodman air handler ARUF036-00A-1A does not blow air in heating or cooling mode only hums/buzzes, what could it be?


Looking at the wall thermostat, you will see the fan switch that has two settings: fan auto, fan on.
You will need to place the fan switch in the fan on position for testing purposes.
This will make the indoor fan run continuosly, and never cycle off.
In the fan auto position, the fan will turn off when the thermostat temperature setting has been satisfied.
Remove the air handler access panel.
Is the air handler fan operating?
If the fan isn't working see if you can listen closely if it is humming, or can touch the motor to see if it is hot.
If it is humming and has a bad capacitor, you can tell this without having an electrical tester by spinning the fan wheel by hand.
Be very careful... making sure your hand won't get cut by the fan wheel spinning when it starts up.
If the fan spins and picks up full speed, replace the defective fan capacitor.
It is the shiny silver metallic cylindrical object with electrical wires attached to it.
Make sure you write down where those wires attach and turn the power off before removal as they carry 240 volts to the fan motor.
If you find that the fan wheel doesn't turn freely when you try to spin it by hand, the bearings have seized and you will need to find another fan motor of the same size, shaft length , speed , and horsepower to replace the defective motor.
Keep in mind that a humming sound in the air handler COULD be from the transformer instead of the fan motor.
The transformer is a black cube shaped device with electrical wires attached to it.
If the 24 volt transformer goes bad, your thermostat will not function and nothing will come on.

Dec 01, 2014 | Goodman Heating & Cooling

1 Answer

Indoor fan will not stop


Seems like the fan relay has stuck (Likely to be on the main indoor PC board) or if the machine was being used on heating mode, the indoor pipe sensor may have failed causing the fan to continue to run. Most air cons on heating mode, will keep the fan running for a few minutes after you switch off on heating mode to cool down the indoor unit before it turns off completely. The pipe sensor signals the main PC board to tell it that the unit has cooled down and can now turn off completely. If either of the above faults occur, the indoor fan will keep running all the time.

Jun 19, 2014 | Goodman CKL36AR36 Air Conditioner

2 Answers

Goodman package heatpump blower motor contant running


check your themostat fan mode switch to see if it in on or auto. It should be in auto. If this does not stop indoor fan motor, (it may take up to 2 minutes for the fan to stop, preprogrammed shutoff in the thermostat and fan control cards may make you think the fan has not stopped ) If this does not stop the fan the fan control board in your air handler has a green wire shorting to 24 volt signal in the theromostat wire or the contact on the blower control card is stuck and will need replaced.

Feb 05, 2014 | Goodman Manufacturing Goodman GPH1348H41...

1 Answer

Furnance running all the time never shuts off


Turn the thermostats fan position to Auto instead of ON. If it already is in Auto, then there is a fan relay stuck in the board.

Dec 13, 2013 | Goodman Manufacturing Goodman AEPF313716...

1 Answer

Airhandler- the themostat is on auto/I understand cool,heat.emerg heat,The (G) terminal-then why heat mode or,emer heat fan blows?Only when i switch to cool mode the handler still want start up blowing...


the fan fill come on with the sequencer (stack switch you call it) it will also come on with the fan relay. on some goodmans the fan relay is the black box on the circuit board. use a jumper to jump red to green, this should bring the fan on sounds like you could have a broken green wire, try using a different wire instead of green

Sep 12, 2013 | Goodman Heating & Cooling

1 Answer

High low fan motor


Your main concern is the temperature difference across the indoor coil for both heating and cooling. When you turn your thermostat from auto to on, you are on high speed.

If you have long duct runs and little return air registers then high speed
would help cool the house better. However in the heating mode, you
could lose up to 10degrees by having the high speed setting.

What they installed is sized for your house and the speeds should not have to be changed unless the ductwork is not sized right for the house.
Cooling should be High-Black wire.
Heating should be Low-Red Wire.

400cfm equals a ton of cooling= 1200 sq. foot, For cooling you need
High speed. For heating it is whatever the temperature rise across the
coil is, which is located on the furnace/air handler.

Jul 13, 2010 | Goodman CLQ36AR49 Air Conditioner

1 Answer

Indoor unit runs all the time in auto, outdoor


Your fan relay in the air handler is defective. Replace the fan relay.

Aug 29, 2009 | Goodman Heating & Cooling

2 Answers

My air handler comes on ,not the outside unit when my thermostat is in the off position even if i turn the thermostat down to 50 and have it turned off the air handler comes on for about 5 to 10 minutes...


If you have a standard thermostat the fan switch is for the air handler only. It completely over rides the thermostat for most settings. Now lets see this is what I'd expect:
fan switch on Indoor fan runs all time
Fan switch auto Indoor fan only runs when thermostat is set to cool or heat and the thermostat is turned up above room temp for heat or below room temp for cooling. In both of these modes the furnace blower comes on and stays on til the room temperature is satisfied. The outdoor unit only comes on for AC the out door unit will not come on for heat or the "on" setting on the thermostat. See exception 1 & 2 below...

Exception 1- (in a heat pump the out door unit runs in both heat and cool mode unless it has emergency heat turned on then it will not come on outside in the heat mode, and depending on the type of heat pump and furnace or air handler it is). A heat pump thermostat usually has "backup heat" and an "emergency heat" setting switch on the thermostat.
Exception 2 - On some thermostats they are made to cycle on the heat if the temperature reaches a preset temp (around 50'f usually but definitely by 40'f). This mode prevents freezing when if instance the homeowner is away or while the home is under construction. In this mode the fan inside can run but the heat usually comes on with it.
Exception3 - On some electric furnaces the heating strips may be individually controlled and thus not all come on at one time. This may give the feel of no heat especially if the room is cold.

Now there may be other exceptions but Ive tried to give you a heads up on some of the most common ones.
If you need more help please post more specifics about your unit/system as to for sure what switches are set to what setting and what is happening with each. My first though was that maybe your system is OK and you needed to know if the thermostat was working properly.

If this helpd you understand your problem would you please give me as hifgh a mark as you can. Thnaks for using fixya and good luck.

Mar 28, 2009 | Carrier Heating & Cooling

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