The compressor is working but the blower fan does not come on. checking the fan motor, the shaft that turns the fan can not be turned by hand. it seems like the motor is frozen.

Light and fan are two separate functions in your hood. The fan gets very greasy from the cooking. The grease doesn't act as a lubricant but as dirt. Remove the fan from the unit and check to see if the shaft is wiggling,or if it is seized. At this point you may need to replace motor. If it turns somewhat put a few drops of oil at the shaft, both ends if possible, and spin the fan by hand until it's loose. Replace back into hood and see what happens. Many times the bearings in these fans go dry and will not spin. GOOD LUCK FRIEND.

If your description is in a few minutes, It sounds like a loose wire. If it is the outside fan motor to which you were referring, it should have 3 wires. Find those 3 wires and trace them back to the control board and main contactor. check the condition of any connections and the condition of the insulation. Next, If it is the blower motor, do the same thing.
It also sounds like it could be the control wiring. The blower control wire is the green wire coming from the thermostat and going to the fan control board in the air handler. If you have a loose connnection in the thermostat and/or loose connnection for some splice in that wire, it could interrupt the control power to the blower motor and cause it to cycle.
If it is the condensing fan on the condensing unit, it is the yellow wire. Check the same criteria as green wire above.

As far as the last of your inquiry, the air conditioner reaches temperature then turns off is normal and is not part of the problem your having.
The only other thing I can think of without more information, If the condensing unit comes on and shortly later turns off, the question is whether the condensing fan comes on when the compressor turns on. I had a case today, both the outdoor fan and compressor would not run, but the main contactor was pulled in, and voltage was available. It turns out the dual capacitor was bad and the condensing fan had stopped running and the compressor was cycling on the inherent motor protection inside the compressor. Inside the compressor is a bimetallic overtemperature switch that helps protect the compressor from getting to hot. This is your probable cause and can be determined by checking the temperature of the condensing fan motor and the temperature of the compressor. If both are so hot your hand gets burned, you probably need an new capacitor and outdoor fan motor. If the compressor cools by turning it off, the inherent motor protection will reset if it has not burned out. If after deenergizing the compressor cool off and will not reset, the compressor will have to be changed.


Hope this helps.

A/c compressor works fine and the blower motor works and shutdown right? it is the problem with the blower resistor or with blower motor relay. try to direct the resistor irrespective of the speed. hope the problem may be solved.

check blower motor just because it turns by hand doesn't mean it works is it getting power

hi there ssh4990

pauly46 here

is the blower fan turning ? or has the connection between fan and motor shaft been broken / shawn ?

is the air intake blocked ?

has the fan blades been broken off ?

is the outlet tube blocked ?

check these out as thats about all it could be

have a look and let me know

cheers

Check the blower motor ,it may be bad,try bumping it with your hand,sometimes they will try and work if they are bad,but it still maynot ,and still be the problem.

Could be as easy as a new blower motor switch or blower motor resistors.

Use a 3/4' wrench on the blower wheel and a 7/16 wrench on the front shaft of the motor. The threads on the rear shaft are left hand threads so make sure you turn the shaft in the proper direction.check the wheel for cracks,usually if they are loose they're damaged,

check the end threads of the new motor are the not left hand threaded, if so you are tighhtning turn the oppisite direction
btw you may have to replace the blower if it cracked the blower when the plasitc came off might have to use vise grips to ge it off

Hi,
Pls check following......
1) If the Fan run and the Blower not function its min loose the hub or screw of the blower ,fix the hub or screw .
2) May be the the shafting of fan motor not rotate, repair the shafting or bushing of fan motor.
3) Check the Capacitor if this low capacitance or open (not function) using Multi-tester to check the parts.
4) Check the Fan motor wire if this loose connection.


if does not working,go to the nearest repairman to help the problem.

Thank you & have a nice day


Edgz