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Wheel fan would not kick on after electronic heater starts to blow air in ducts although the fan is tested in working condition

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Re: Wheel fan would not kick on after electronic heater...

Did you recently replace the thermostat? If so you need a thermostat for electric heat. This thermostat will turn the blower on when the heat is calling.

Posted on Jan 26, 2008

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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 Air Conditioners

1 Answer

We have just bought a 1996 Sun Voyager. It was a one owner and well taken care of. The ac comes on and blows cool air but has no force of air behind it. Does anyone know what it could be?

what about the heater. the a/c and heater share the same fan motor. If there is no force in the heater as well it may the the fan is not turning at full speed. should be able to hear the fan as well as feel the air from the ducts. another possibility is a blocked duct way. If you can hear the fan blowing full speed check the duct for obstructions.

Sep 08, 2013 | Dometic Rooftop RV Air Conditioner

1 Answer

Vulcan ducted heating

Do a continuity test on the heating elements, and if they're good then do the same on the sequencers or contactors, whichever you have. The sequencers (or if you have contactors turn on the heating elements). All the fan does is blow air. It blows against the heating element to put out hot air. Either your sequencers/contactor or your heating element is defective.Wait,each sequencers is connected to a fuse.Check the sequencer fuse too. Find the sequencer/contactor wherever the wire feeding the heating element is coming from.

Aug 20, 2013 | Air Conditioners

1 Answer

Central a/c fan will not start after flood

replace the fan motor as the bushes are dry and seized up.

Jun 09, 2013 | Air Conditioners

1 Answer

I have a trailer with a duo therm ac..the outside fan is coming on but nothing is blowing thru the registars

Not sure where your located, so check that unit didn't freeze up on you. Make sure evaporator and condenser coils/fins are clean and run on fan only to aid in thawing them out. Once you see condensation running off roof good, try using cool again and see what happens. When they freeze up, airflow gets restricted through unit. The outside fan and blower wheel for forced air inside are attached to same motor, so if fan is working, blower wheel should be turning as well unless it is broken, or allen key has come loose on clamp around center of blower wheel. Other possibility is that the blower wheel is turning but forced air ducts have blockage at inlet, which will require letting ceiling assembly down to inspect, or removing cover on roof and screws at front evaporator and opening it up. Make sure power is off during inspection.

Sep 12, 2011 | Dometic Rooftop RV Air Conditioner

1 Answer

Hi my Dometic rooftop (1999) used very little worked perfect untill this past year when we went camping. Fan worked ok, but no cold air coming out of ducts. Compressor seems to kick on, or at least a...

Check compressor run amps is correct with a ampere meter. If less, it's under gas leak. Keep your arm on discharge line (smaller pipeline). If no heat means no gas in the system. Find leak and arrest it. Vacuum and recharge gas.Better service the unit and check. Due to condenser & cooling coil, air filter, blower wheel are dust blocked will result to very less or no cooling. Helpful?

Jan 31, 2011 | Dometic Rooftop RV Air Conditioner

1 Answer

Everstar MPK-10cr blowing hot air

Sound like the back lower motor that turns the fan wheel in the back has failed or needs to be lubricated. I used a little bit of silicon spray since it resists moisture. You can try taking the back off...then the front...then take loosen the front motor fan wheel housing and lift up enough to access the lower back fan motor. I then sprayed the motor housing openings as close to the inner part as possible. That also stops the common noisey fan issue.

Jul 20, 2009 | Air Conditioners

1 Answer

Weather King blows fuse in Criterion II furnace

You probably have a shorted wire between the heater and the a/c. There are two wires that conncet the control power to the outdoor a/c from the heater they should be on terminal c & y in the heater. disconect those two wires and try it again if the fuse doesnt blow you have a short in the wire between the a/c & heater

Jun 01, 2009 | Weather King 10AJA2501AH Air Conditioner

2 Answers

New motor runs but doesn't blow air through the registers

Is the blower wheel turning? Did you by chance have to remove the motor from the blower wheel to work on it? If you did, did you put the blower wheel back on in the correct direction of air flow? Also, did you put the correct capacitor back on the unit so it can get up to the required rpm's? These are things that you will need to check for. If the motor is running and the blower wheel isn't and the wheel is tight on the shaft, then you will have to replace the motor. The brushes may be bad on the unit and it's not turning the shaft. Hope these ideas help.

Apr 09, 2009 | Carrier 52PQ-515---3 Premier Series Heat...

1 Answer

No cold air blowing from vents

faulty indoor fan motor, check for blown fuses first in the indoor fan unit first before replacing motor. i live in s.a to i feel your pain.

Jan 29, 2009 | Air Conditioners

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