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Most fans have a small rectangular multi-tap capacitor connected to the speed control in the fan. It is likely that this has gone partially bad. The capacitance values are printed on it. Lighting stores and big box hardware stores generally carry replacements.
The A/C dial is High Medium and Low, that only changes the fan speed, it doesn't changed the compressor at all, with all three speeds.
If the fan is not running the compressor won't run very long.
Probably an open winding, in the medium speed of the motor, the switch is bad or medium and low speed not hooked up.
The different fan speeds are different airflows across the coil and blows out into the room..
For instance speed
#1 is usually high speed
#2 is medium high
#3 medium low and
#4 low speed
On a 3 speed switch you usually have 4 terminals, and they are marked L1, 1, 2 and 3.
L1 which is line voltage from the electrical cord or wall plug, #1 low speed usually a red wire from motor, #2 medium speed usually a blue wire from the motor and #3 high speed usually a black wire from the motor. That is if the fan is low,medium and high, if it says high, medium and low then reverse #1, #2 and #3
It sounds like fan motor is okay. There are two motor windings -- one low speed, one medium speed. Low winding gives you low speed, medium winding gives you medium speed, both windings give you high speed -- so I would say if you get high speed, both windings are good.
The remote (the hand held transmitter) controls the speed by raising and lowering the frequency of the current which is 60 cycle coming to the fan ceiling box. If the fan speed -selector switch (usually a pull switch) is set to high, when the remote (transmitter) signals the receiver to change speeds, the frequency of the current is changed by the receiver (the receiver is usually in the fan housing).
Sounds like you'll need to replace the remote system -- these come in sets, both transmitter and receiver, and cost about $30. If you're not experienced with wiring fans, you should get an electrician to do the job.
If this fan has a pullchain that also controls the fan speed, and you have a remote, the pullchain has to be set for the highest speed. If it is set at medium or low, it will mess with the remote operation. Note: usually high speed is the first pull after the "off" position.
the barector resistance would have worn out or would have broken in the rheostat so change that resistance then you would see ur fan working in low medium and high speeds
1. Set the remote to run the fan on high.
2. Pull the fan speed chain until the fan reaches high speed.
3. All speeds should work normally now.
The remote is modulating the maximum speed as set by the pull chain.
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