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Outdoor Split System #AC036X1021 & Air Handler #???


PTZ

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Posted

Last Spring, I started my AC up for the first time in months.  It worked the first day.  However, it stopped working the following day.  The central fan works, the heater works, but the AC does not.  When turning the AC on at the thermostat, the fan blows air and the outdoor unit hums, but the blade on the unit does not turn.

Two years prior, when it was under warranty, I had the same issue.  The repair man came out, but only worked on the air handler.  I don't remember specifically what the problem was, but I do remember him replacing a board.  Coincidentally, he had a replacement part in his van - I don't think it was a new part.

Any suggestions? 

I'll have to wait for my dad to return from out of town to borrow his ladder to get into the attic and retrieve a model number off of the air handler.

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Posted

You may have blown fuse at the condenser, or even more likely you have a failed capacitor in the condenser. Capacitors going bad is VERY common.

Start by checking for power at the service disconect and we can go from there.

Posted

I'm not exactly sure how to check for power at the service disconnect so I uploaded a video of the condenser while I had the AC turned on. 

You can hear the condenser getting power, but the blades are not moving.

Posted

I haven't searched yet, but with power OFF, can the Blade be turned easily ?

With the power & AC ON, if you give the Blade a push (pen or pencil) will it continue ?

 

Posted

You have a bad condenser fan motor. Looks like a 1/4 horse power 240 volt motor just from looking at the 18 inch 3 wing blade with 27 degree pitch. Compressor sounds sweet. If the motor uses a separate smaller capacitor I would look for it to be swollen and replace it. If the fan motor is on the main capacitor, I am pretty shore you gots a shot fan motor. Follow the WHIP ( thats the power supply cable) up to a metal box and open that box, inside will be a quick disconnect or a breaker.

Posted

RegUS_PatOff -

I did as you asked and it worked.  The condenser's blade started blowing and the house cooled down so the motor must have been stuck.  Thanks for that.  I had a similar problem with my dishwasher recently.  Al I had to do was move the motor with a screwdriver to get it working again.  What cases a motor to stick?  Is there some sort of PM that needs to be done to the outside condenser?

- PTZ

Posted

Get you some Zoom-spout oil from ACE hardware. HVAC pros use this oil because it is non flammable,and does not dissipate under heat conditions. Use it to oil all your motors and they will last a long time.

Posted

That motor WILL stop again SOON. The damage has been done . Replace the motor as soon as possible. You can look for a new motor that is oilable, but most motors are sealed these days and have a 5 - 10 lifespan.

Posted

AC is right. Don't wait till hot weather. LOL

Posted

Oh , and replace the capacitor as well.

Posted

I went to a call one time with this same problem and the guy had a box fan on top of it and the sprinkler hose shooting water on the sides. It actually was working that way!!

Posted

That is how a cooling tower works. No reason why it shouldn't work for a condenser.

For you guys out there that may be considering water and a fan for a long term solution, just know that the water will scale up on the coil and most of the time it will rot the aluminum fins. But it is great is a short term way to have AC with no condenser fan.:pisser:

Posted

You might:gaptooth: be a redneck if you ever use a lawn sprinkler to cool yer house.

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