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Malfunction of Outdoor Unit Fan Motor (
Abnormality of fan motor system is detected according to the fan speed detected by hall IC when the
fan motor runs.
When the fan runs with speed less than a specified one for 15 seconds or more when the fan motor
running conditions are met
When connector detecting fan speed is disconnected
When malfunction is generated 4 times, the system shuts down.
?? Malfunction of fan motor
The harness connector between fan motor and PC board is left in disconnected, or faulty connector
Fan does not run due to foreign matters tangled
Clearing condition: Operate for 5 minutes (normal)
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be
Replace the outdoor unit fan motor.
Connect the connector.
Remove the foreign matter.
Are fan motor
Replace the outdoor unit fan motor.
Is the pulse input?
Check No. 11
Check for pulse input
for number of rotations
on the outdoor unit
Replace the outdoor unit PC board.
any foreign matter
around the fan?
Can the fan be
easily rotated by hand?
One of the common problems in air conditioners is fan motor bearings going bad and the fan motor shaft is locked up stalling the motor or preventing rotation. Another cause of fan motors not running could be the motor start capacitor. The capacitor is needed to give the motor a jump start to get it rotating. If you can get access to the fan squirrel cage and can spin the fan ok, the motor bearings are then good. Most likely the problem then is a bad motor start capacitor that can be replaced. In very rare cases the motor winding itself could be bad and the fan motor will need replacement. regards, Dennis
If you replaced the fan motor with the correct rotation replacement motor the fan should be blowing in the right direction or did I misunderstand what you are trying to explain? Sea Breeze If the part number is=> WR60X187 the motor should be turning clockwise rotation while looking at the motor from the rear. Thanks JT
1.2 amps, 115 volts 60hz 1550 RPM; Shaft 1/4" x 1" Rotation = CCW 3.3" Diameter Motor 2 Mounting Studs Opposite Shaft End Motor Case Length 1 15/16" 2-Prong 115 Volt plug For Model 8663RP, 8673RP 8664RP (86933-000) 86933000, JA2B104N, JA2B104 can substitute 99080517
Part # 86933
It's on the first page, and the 8th motor on the page at the time of this post. Hope this helps!
The best thing to do is buy the replacement motor. It is usually a pretty simple thing to change out and it sure beats having to take down the whole thing. Here is an article on finding the right motor. http://nutoneproducts.blogspot.com/2009/05/nutone-bath-fan-motor-replacement.html
your blower fan screws onto the end shat of the motor. Now the direction? It could be reverse threads. Since you are changing out the motor stick a screw driver in the old motor to lock it up and try righty-lefty to loosen your fan. don't damage the fan with tools. Go here and see if your fan is shown www.repairclinic.com
It sounds like the electronic controls have put the fan into "breeze mode". The fan turns slowly then is supposed to surge back to high. Some people love this feature for some reason... Disable breeze mode via your remote (its the button with the stacked ~'s).
A bad motor wouldn't rotate at all. The only other problem might be the motor's running capacitor. If you can start the fan in either direction (give it a hand spin in the opposite direction of rotation) you have a bad capacitor...and you can find a replacement anywhere (Radio Shack).