Goodman Furnace: Blower motor loss of rotor control or high current trip
Blower motor loss of rotor control or high current trip on a Goodman furnace: This fault means the circulator blower motor lost track of its rotor, or it saw a surge of current, and the control shut the furnace down. In plain words, the motor was suddenly working a lot harder than it should. Think about anything that could jam it or choke its air. Dirty filters, blocked registers and something stuck in the blower wheel are all common, so check those before you condemn the motor. Power off first, because that wheel can start without warning.
Applies to: 34.5 in chassis gas furnaces
Common causes of blower motor loss of rotor control or high current trip
- Abnormal motor loading
- Sudden change in speed or torque
- Sudden blockage of furnace air inlet or outlet
- Debris or a loose wheel rubbing in the housing
How to fix blower motor loss of rotor control or high current trip: step by step
- Turn power off before repair
- Check filters, filter grills, registers, duct system and furnace air inlet and outlet for blockages
- Check the circulator blower for obstructions. Remove and repair or replace the wheel or motor if needed
- Spin the wheel by hand and feel for drag or noise in the bearings
- Replace the motor or wheel with the correct replacement part if needed
- Restore power and watch a full cycle for a repeat fault
If the unit shows an error code, look it up: Goodman Furnace codes
Source: Goodman GMVC96 Service and Troubleshooting, p. 63. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.