2005 Coachmen Freelander equipped with a duo therm ducted roof A/C unit. A/C compressor starts, but air handling motor does not, regardless if motor setting is high or low on the thermostat. Same thermostat controls basement ducted furnace. That all works fine. Beginning to suspect the starter capacitor, but am wondering if there is something more "obvious" to check? Unit worked when it went into storage in October, doesn't work at the campground now in July - first outting of the year. I wouldn't Michigan winter shouldn't have caused this!
Analog control system is part no. 3107541.009 if that has any bearing.
(Vacation seems to only be for the kids - I'm always working on this @#$% thing!)
An expert who has achieved level 2 by getting 100 points
An expert that got 5 achievements.
An expert whose answer got voted for 100 times.
An expert who has written 50 answers of more than 400 characters.
Re: Compressor starts, but airhandling motor does not
Sounds like you may have a bad fan capacitor or a bad fan motor. Remove the inside cover from the air conditioner and access the squirrel cage fan or, remove the shroud from the top to access the fan that way. Have someone turn the thermostat on as you spin the fan motor by hand. If the motor starts and runs, then you have a bad capacitor. If the fan motor still does not come on, then there are a couple of possible problems.
When you turn the thermostat to fan, do you hear an audible click in the control unit of the ac? If so, then you know that the thermostat is sending 12V to the fan relay on the board.
I think the motor just may be frozen up. Try spinning the motor by hand and see what happens. Again, if it starts, then just lube the shaft points on the motor with some WD-40 and all should be fine. If the fan motor starts and then after the cycle, does not restart, then you definitely have a bad capacitor.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
check for the presence of voltage supply to the fan motor,if it has voltage,check the winding of fan motor if it has resistance base on its connections.if the fan is defective,perform a rewinding of coil
hi,you might need a new compressor...you will need need to go back were you bought capacitor...buy a hard start capacitor too..this might crank the compressor...hope this helps.if you buy it..call an ill tell you how to wire it...if it dont ,you need new compressor...call michael..doctor airr..appl.repair...843-384-8474...
What type of thermostat do you have? If the fan is not coming on and neither is the compressor, then is more than likely a problem with the thermostat of control units of the Air Conditioners. The fan will come whether the compressor does or not if the thermostat and control unit are working correctly. Check for twelve volt at the control unit of the air conditioner ceiling unit. (Red Wire, should be labeled)
First of all, I think you mean 110 volts on your meter, not amps, just so we're on the same page. It sounds to me like you may have a capacitor problem on your compressor. I'll try to see if I can find you a part # if you have someone very experienced with electrical that can change it for you. they can be a little dangerous, so only someone familar with them should work with it. What the capacitor basically does is store voltage and uses it to help the big draw on start-up of the compressor, kind of like giving it a boost to get it started, and after it's up and running, all should be well if everything else is up to snuff. How old is the AC unit? Did it run well for you in the past? I'm asking this just in case it was a recent installation, with perhaps wrong size wire used. Should be minimum 12/2 , with 20amp breaker,if that means anything to you, or your mechanic.