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Replaced blower motor on coleman ac

Replaced the blower motor on my coleman roof top ac but still have to spin the squerrel cage by hand to get it to run and once I spin it by hand it runs fine how do I check either the start or run caps or relay

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You MUST always replace a capacitor when you replace a capacitor start/run device.
Replace the cap.

Posted on May 24, 2009


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1 Answer

What causes a repetitive, rapidly repeating, hammering or slapping sound in my rv roof top ac?

It's sounds like a critter may have started to make a nest in the blower motor fan. I recommend trying to clean out the fan motor squirrel cage.

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Amana heat pump emergency heat comes on but blower will not start. The call for heat comes in and the heating element(s) glow red for a few seconds and then there is a "click" and the heating...

Check the blower motor capicator. It should be mounted close to the motor with 2 wires to it (brown,brown/white).
Turn the blower on the thermostat and spin the squirrel cage by hand and see if it runs after by itself. If it does then definitely the capicator is bad .If it still doesn't run then check to see if there is voltage going to motor.
If thermostat is calling for fan and there is voltage present at the motor terminal then the motor is bad

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Motor starts but wont turn

If it hasn't been running for a while, try going up on roof (AC in off position) and using a stick, or similar piece long enough to slide it through air slots in cover and spin fan blades a few times. It may only go a little at a time but keep going until you make 2 or 3 rotations. Then remove it and have someone try fan mode only. If it runs, let it run for a few minutes and , from then on it should be o.k. If you can't get at it to spin it enough with stick, remove screws on top of cover and remove cover and spin by hand (carefully and power off to AC), then try to start it. If motor hums but still will not start by itself, have capacitor replaced. Very dangerous to handle so either have someone who's familiar with capacitors do it, or a technician.

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The air conditioner has a roar so loud I can barely here my TV.

This roar sounds like the bearings going bad on the electric blower motor.. Does the unit cool just fine ? If so then the blower wheel that moves the air is rubbing against the cage and needs to be adjusted. Turn power off to the unit and remove the front cover where the motor is.. Spin the fan wheel by hand and see if it is hitting the sides.. If it is the cage with motor is being held in usually by one or two screws at the front on the top where the cage is suspending from. With theose removed the cage will slide out and usually wiring can stay connected. There will be a square head bolt that is keeping the blower wheel in place. Spray some penetrent on the threads and let sit for a few minutes. Then use a box end wrench or crescent wrench that is the correct size and loosen bolt by turning counter-clockwise.. WHen wheel will spin on shaft see if you can tap the blower wheel in the correct direction to loosen from hitting the cage. Connect everything back in the opposite manner of course.

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Fan not blowing in coleman trs rv roof air

well check a few things first....have someone remove the cover and reach in with a hand and try to manually spin the spinning?....then tell the person below to click in the on postion while someone views from up it humming? or even trying to spin?....if not check the fuse on the RV that protects the A/C unit.....good? replace the capacitor ( it the silver or gray can looking thing that the motor wires run to) only the correct size will work w/o causing further motor damage.

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this one is carrier AC with bad blower motor. Hope This Helps.

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1 Answer

I have a 2002 Jayco Kiwi Hybrid. My roof ac hums when turned on. I replaced the motor and it didn't fix problem. If I give the squirrel cage a little push, it will run but won't start on it's own. AC blows...

Sounds to me like a bad capacitor. Look for it around and wired in with the motor - should have 2 wires going to it. SAFETY - don't touch the terminals or you will say naughty words involuntarily!!!! Test this and if bad, replace with a replacement with EXACT SPECS. This should take care of ya.....

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1 Answer

AC unit wong start unless I spin the blower

you have 2 windings that are in you motor,One winding is the start winding It give the motor its initial boost that gets the fan spinning.The other winding is the run winding and it takes over and keeps the fan running.So it sounds like the motor is bad because the start winding is not giving the boost it needs to start. good luck--Nate

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