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Fan won't start when furnas kicks on - Ruud Central System Air Conditioner

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If it is a newer system the fan relay is built in to the control board

Posted on Oct 28, 2008

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1 Answer

My ac fan works but the compressor won,t kick on


The fan on the condenser or air handler? Check the capacitor on the condenser. If you don't have a meter that does uf you can take the amp draws of the comp multiplied by 2650, divided by the voltage between com and herm on the cap. If cap is good be sure compressor is not off on thermal overload, cool with water hose, careful to not soak electrical. If not hot and cap good , try hard start kit. If still no compressor ,ohm compressor, com to start plus com to run should equal start to run on ohms. Hope this helps.

Apr 04, 2016 | Heating & Cooling

1 Answer

Fan does not kick on when unit starts


the fan will only kick in when the coil needs to be cooled or heated depending on which cycle you are using the fan only removes the temperature from the fan coil and doesnt run all the time

Aug 10, 2013 | Heating & Cooling

1 Answer

Compressor won't kick on 12,000BTU Frigidaire window A/C After cleaning


Is everything dry? Do you hear any noises like the compressor running it is just not cooling?

Aug 04, 2012 | Frigidaire FAH106N1 Wall/Window Air...

1 Answer

I started my forced air furnace yesterday and it worked fine. Today the burner kicks on when the thermostat calls for it, but this morning the burner kicks on, but the fan won't start.


Hello there,
If the burner kicks on but the fan is not starting, then it simply means there is a problem with the blower motor. The problem most likely is that the motor is dusty and need to be cleaned out.
Once the motor sis cleaned out, have it greased and installed back and ensure the wiring is intact, then turn on the furnace and the fan will start to foll. If that does not solve the problem, then it means there is a problem with the blower motor and it meeds to be replaced.
All the best Elect_Comp

Sep 16, 2011 | Heating & Cooling

1 Answer

Hooked up new 4 wire fan 2 condensor with a new 2 cap fan runs fine but no compresor?installed as was told with nothing runnng 2 the new cap but the brown wires but compresor isnt kicking on


The compressor could be bad there is two ways to tell with an ohm meter check each lead off the compressor and to ground for continunity or a megometer . You can always try a hard start kit. It is a super capicator that multiplies starting voltage. Have you checked all connections? There might be a low\ high Pressure switch in the referigent lines if that is bad it won't allow the unit to start. Also is it a heat pump or straight a/c the heat pumps have circut control boards in the unit that control everything

Aug 07, 2011 | Goodman CLQ36AR49 Air Conditioner

2 Answers

The AC fan does't want to begin to spin on its own. if I give it a little help, it will begin to work. Why wont it start on its own the fan will spin very easily and is not restricted at all it...


Hello, sounds like you have a bad capacitor, the capacitor gives the motor a boost and improves the running effeciency of the motor. Replace the capacitor it should fix the problem.

Mar 18, 2011 | Frigidaire Heating & Cooling

1 Answer

Compressor appears to kick in, runs for short time


It sounds like your unit may have a bad run capacitor or start capacitor and relay. Low voltage will also cause this problem. First you need to make sure that you have the full rated voltages at the unit, if you do, then, have the run and start capacitors checked out and the start relay.

May 31, 2010 | Dometic Rooftop RV Air Conditioner

1 Answer

Heater fan runs manual/ not auto


The heater fan kicks -in by a heat relay and when it reach the correct temp. it closes and starts the fan. Locate this and jumper this to see if the fan kicks in!

Dec 18, 2009 | Intertherm Heating & Cooling

1 Answer

Unit won't turn on


WHEN A COMPRESSOR FIRST STARTS TO RUN THERE IS AN INITIAL HIGH STARTING CURRENT(30 AMPS PLUS),BUT THIS SHOULD DROP BACK DOWN TO RUNNING CURRENT PRETTY QUICKLY.IF IT MAINTAINS THIS HIGH STARTING CURRENT FOR A WHILE THEN THIS GENERALLY INDICATES THE COMPRESSOR AT FAULT,BUT!!!!! ALSO CHECK TO SEE IF THE FAN IS NOT SEIZED. DISCONNECT THE FAN ELECTRICALLY THEN RUN THE UNIT. IF THE STARTING CURRENT MAINTAINS APPROX 6 AMPS THEN THE FAN IS AT FAULT!........HOPE THIS HELPS!!
REGARDS........BIGGGAZZ

Oct 15, 2009 | Dometic Rooftop RV Air Conditioner

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