Reverse clutch solenoid or its wiring failed open or shorted to ground
Aux 1st remote valve FLOW potentiometer is failed in the Armrest Controller
Cab sensor shorted to ground
Reverse clutch solenoid or its wiring failed open or shorted to ground
If Inadequate air flow is problematic, so clogged air filters, evaporator core air flow restricted, faulty blower fan motors, defective blower switch or faulty wiring or loose connections.