Inspected 3 reznor units found unit 1 to have bad proofing switch. Unit 2 has bad blower motor. Unit 3 has bad blower motor Motors are locked up and switch is stuck open due to the switch not being the same as all the other units inducer putting out .67 wc all other unit inducers putting out .80 motor may need replacement as well if proof switch does not fix issue Waiting qoute for repair