FNRP pod in illogical state (two positions on at same time)
Aux 4th remote valve LEVER potentiometer is failed
Both Draft Pin voltages are not within spec for no load condition during calibration
FNRP pod in illogical state (two positions on at same time)
Aux 4th remote valve LEVER potentiometer is failed
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.