A bad bearing or bad cap on an RV heatpump Coleman #6537
I have a bad bearing (most probably) or bad cap on the outdoor evap fan motor on a coleman 6537 heat pump installed in a Itasca 40KD. I need a repair manual that shows where the access to this motor is! (not accessible from in front, doesn't look good from the rear or sides and I see no way of getting at this motor from the bottom). Before I pull the bed, cabinets carpet and flooring to get at the top I would like to know if that is in fact where the access is.
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It could be a bad temp sensor that tells the fan to come on when the heater reaches a certain temperature or it could be a bad fan motor. Take a 12 volt jump start box and hook it directly to the fan motor to see if it will spin. If it does not the motor is bad and if it does you have to replace the temperature sensor in the heater.
Hi, its very possible the capacitor is open or shorted. Look it over to see if it is leaking oil or swollen or even deformed. When installing a new condenser fan motor, they should sell you a new run cap with it. Its probably a 5 uf 370 volt cap and you can have it checked to see if its putting out the right amount of micro farads. If it shows any of the signs I have said, the cap is bad and you will need a new one. Does the motor spin free? If you have a meter, a digital is best, you can check to see if the motor is open or shorted to ground. Set the meter on continuity, and check each lead to ground. If it is open, your meter will show no reading. If shorted to grd, you will have a reading or a beep if your meter has that option on it. This is how you will know. If it would be best for you to take off the run cap and take it in, they can check it for you where you bought the motor. Its not unusual to loose a motor in a year as they work hard in the heat. I have seen them last for years and for just a couple of months. Keep me posted. Best of luck to you, Shastalaker7
The fan motor is getting hot and going off on the internal overload in the motor.
This is caused by either a low voltage, a bad capacitor, or tight or dry bearings in the motor.
To check the bearings turn the power off to the unit, then spin the fan blade if it spins freely then the bearings are ok.
To check the capacitor you will need some kind of
tester or you can buy a capacitor and replace it, that's what a lot of people do. They usually don't cost very much.
To check the voltage you will need a voltmeter and measure the volts at the unit.
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This could be the problem. It is more likely that the motor bearing is bad. Take the fan capacitor and have it tested. Or replace it, (under $20). Was the fan motor loud before this happened? Hopefully it is just the capacitor, the motor runs $60 - $100 and is a FUN to replace.