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to Change Your Condenser Fan Motor on
Rheem Heat Pump or Air Conditioning Unit
Motor Hums - Compressor Will Start...
All Repairs to Your HVAC
System Should be Performed by a Professional Technician to
Avoid Injury or the Risk of
Model: RPKA 035JAZ Rheem Heat Pump...
today in Arkansas was 93 degrees with high humidity. When I flipped the
switch on my thermostat, the inside AC blower fan turned on, but there
was no cold air coming from the vents. I decided to go outside to see if
the condensing unit was working - and found a humming condenser fan motor.
The first thing I did was to spin the fan with a long stick while the motor
was in the "run" position. The motor did not run, so I purchased a new
start/run capacitor. To my surprise - when I hit the main power, the unit
started up. I reinstalled the cover and snickered at all the money I saved.
About one hour later, the fan motor started slowing down and finally started
humming again. Of course, I knew exactly what the problem was: a defective
condenser fan motor.
how I fixed this problem...
Turn off the indoor thermostat
Turn off the main 240 volts to the condenser
This should be done at the outside breaker box or remove the quick disconnect
plug - if provided by the manufacturer.
Remove the 4 screws, holding the back cover to the condenser
Discharge the capacitor by shorting between all terminals with the blade
of a screwdriver.
Remove the "brown" wire and the "orange" wire from the capacitor. Take
a picture with your phone or label the wires with tape to ensure they are
installed in their correct position. The capacitor terminals are labeled
"Com," "Fan," and "Hep (Heat Pump or Compressor)"
Remove the bolts holding the fan grill cover and remove the fan motor and
When ordering the motor, use a part vendor that specializes in Rheem HVAC
parts. Get the serial number and model number of the unit.
When I received the replacement motor, it came with 5 wires rather than
three wires on the original motor. Don't panic! Use the wiring diagram
with the new motor to hook everything up. Make sure the capacitor match
your motor. Use the video below to help you...
Before reinstalling the cover, turn on the power (240 volts) and use a
screwdriver with insulated handle to press down the bar and make contact
with the breaker points. The bar is located between L1 and T1.
If the condenser fan runs when the starter bar is pressed, everything was
hooked up OK.
Comment: Finally, check the
rotation of the fan motor facing the air discharge side of the grill. For
the Model RPKA 035JAZ, fan blade rotation is counter-clockwise. With this
reversible motor, you may use a jumper between the "yellow" and "purple"
wires for clockwise rotation, and "yellow" and "brown" wires for counter-clockwise
off all power to the condenser, prior to making repairs...!
The power should be shut-down
at the breaker box outside near the condenser.
Do not attempt to service
the seal system or the electrical system without
proper training - you
may be electrocuted!
Reinstall the heat pump cover and you're done!
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