How do I clear old fault codes displayed on my Rheem Prestige series furnace?

If your Rheem furnace has two steady green lights and the flow chart indicates that a "normal fault detected", it typically means that the furnace is operating normally and there are no active faults detected. The two green lights indicate that the furnace is receiving power and that the control board is functioning properly.
If you are experiencing issues with your furnace, it is recommended to check for any error codes displayed on the control board or consult with a licensed HVAC technician for further troubleshooting and maintenance.

Rheem furnace error code 68 is a mechanical relay system which signals the blower motor to stop because it has not received a signal from the thermocouple.
Jul 20, 2022

Rheem furnace error code 68 - HVAC Contractors

Motor Power And Communications Issues (Fault Code "68")

ManualsLib https://www.manualslib.com > Rheem-96v-Series
Motor Power And Communications Issues (Fault Code "68"); Line Voltage And Low Voltage Connections To The Communicating Motor - Illustrations - Rheem 96V Series ...

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Hi Mr James. Hope this is what you looking for.

look on the mane plate on outside unit... has voltage ratings model serial type of freon factory charge etc.

Can you be more specific about which switch, what the problem is and what your trying to do? Thank you.

Have you checked the capacitor? Try spinning the blower wheel by hand, if this gets the motor going you have a bad capacitor. If not, the motor will need to be replaced.

Capacitor

Make sure that your furnace filters are clean it sounds like it could be cycleing on high limit.