Have HVAC Questions? Ask an HVAC Expert for Answers
Hi Adrian, I'm Brian and I'm here to help!
The Rheem RHLL air handler has a GE X13 constant torque variable speed blower motor. The panel being on or off should not make a difference as these units did not come with a blower panel interlock switch. That motor requires power at all times on N and H on the motor terminals. The air handler control board sends a 24 volt ac signal to the control terminals of the motor on X13 com which will be 24 volt ac common, X13G which will send 24 volts hot to the motor speed tap 1 thru 5 (whichever it's connected to) which will be energized when the thermostat sends a 24 volt signal to G on the unit control board thermostat terminal strip and X13SPD which will send 24 volts hot to the motor speed tap 1 thru 5 (whichever it's connected to) which will be energized when the thermostat calls for heating or cooling and sends a 24 volt signal to the unit thermostat terminal strip on Y1, W1 or W2.
Since your motor seems to run and stop intermittently, it can be a loose wiring connection or possibly a problem with the motor itself. It would require a meter and probing points while the motor should be running but isn't. If you have volt meter and are comfortable testing live circuits, I can help with that, just let me know.
Let me know if you have further questions on this subject. Otherwise, please remember to rate before leaving (3 stars or higher please!). Bonuses are always appreciated! Thanks for allowing me to help and thanks for using Just Answer!