Carrier Furnace Inducer Motor Fault

Thirty seconds after being turned on or ten.

Carrier furnace inducer motor fault.

Part number part description part link 20054001 carrier 20054001 draft inducer motor assembly view carrier part 20054001 2272065 carrier 2272065 draft inducer motor assembly view carrier part 2272065 2272158 carrier 2272158 draft inducer motor assembly view carrier part 2272158 308088 751 carrier 308088 751 draft inducer housing view carrier part 308088 751 308118 405 carrier. Reconnect pl3 to the variable speed furnace control and connect a dc voltmeter across terminals pl3 4 blue and pl3 2 green. Status code 42 inducer motor fault step action go to does the voltage fluctuate as described in step 28. Added to ensure heating systems are able to comply with the most recent government mandated efficiency standards it is designed to facilitate the removal of gases and air from the furnace and out to the chimney.

Fault code 42 means inducer outside valid speed range this indicates that 10 seconds have elapsed and the inducer motor has not started or the inducer motor has started but is not operating at expected r p m. Draft inducer motor failure. From the carrier 58mvp service manual. Open the door panel to get access to your carrier furnace.

The draft inducer blower is a relatively new component found on modern furnace units. Fault code 11 means the inducer motor is functioning properly. This is always helpful to pinpoint the problem to the inducer motor in the first place. One common issue with any blower motor in hvac systems is a bad capacitor.

Bad capacitor causing motor not to start up. Leak in tubing defective pressure switch restricted vent bad inducer motor rule out motor it works if the tube off the induced draft blower housing are plugged it will cause this trip. Locate the current filter. Take out the old air filter and replace it with a new one.

Blower motor fault indicates the blower failed to reach 250 rpm or the blower failed to communicate within the prescribed time limits.