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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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Posted on Jan 02, 2017


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I have a pilot light but furnace will not kick on,we replace control module but still will not kick on

your positive you have the gas turned on going to this furnas?

also make sure the power going to the furnace is on, it should have a switch with a fuse located close to it and the switch may be off or the fuse is blown out.
if so does the control valve have 2 wires going out to the t-state? if so for a test jumper those wires either at the furnas or at the t-state and see if the furnace turns on, don't forget to remove the jumper as the furnace will not shut off if you don't, this is just to test the wires and or valve.

Sep 27, 2017 | Heating & Cooling

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Fan won't run / won't cool

It may have a faulty compressor relay or overload, best to change both at the same time. It's either that or a bad compressor.

Jan 06, 2018 | Kenmore 73055 Air Conditioner

1 Answer

Cooling fan won't come on when I turn on the AC

Your bigger problem is the compressor not kicking in. The cooling fan is not coming on because there is not enough high side pressure to turn the fan on. I would start by checking power to the compressor, fuses and relays would be inspect. Check to make sure there is the proper charge of refridegerant in the system.

Jul 29, 2012 | 1988 Chevrolet Cavalier Z24

2 Answers

Delay on evap. fan sistm.404a

Give the evaporator a chance to get cold, then check you've got power to the fan, via the evaporator thermistor and door switch

May 02, 2012 | True Freezers

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

Motor hums but won't kick in

Hi simpsonruth1..
In the back of the compressor motor you will see a fan, remove the plastic cover to get to it..
Once you have the plastic cover removed and the fan exposed, plug the compressor in and spin the fan with your quick as the fan could cut your fingers if you do not get them out of the way..
If the compressor starts working, then the start capacitor is bad on the compressor...if it does not run then you have motor troubles, either replace the motor or get it rewound.
Please take time to rate me

Sep 06, 2011 | Paasche 1/8 HP Diaphragm Compressor

1 Answer

Cooling fans won't kick on fuses are good fans are

Hi, Did you check the thermostat. If the thermostat is stuck and will not open properly, the fan will not come on. Have it checked out. Good luck.

Jun 07, 2011 | 1998 Cadillac DeVille

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

Vent Motor on all the time, and blower & furnas won't start

make shure you dont have trash in your vent that would cause that or may be the fan inside is broken but if you **** on that tube it should come on and if thats the case check the flue and fan blade behind the motor even leaves in the blower wheel will mess with the pres inside that fan housing

Apr 06, 2010 | Heating & Cooling

1 Answer

We have a Lennox furnas. It runs on propane. Sometimes it will not come on. If we turn off the switch by the fuse before the furnas, it will usually come on. This is not 100%. I have installed a new...

The unit is locking out on a safety. Do you have the model number of the heater? How old is it? This may not be a minor problem. You may want to call a Lennox dealer to assist you.

Jan 01, 2010 | Heating & Cooling

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