Luxaire Blower Control or ECM Module Issue

Furnace blower starts and stops repeatedly without any heat call (fan surging).

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Failing ECM motor module, Intermittent control board fan output, Loose blower harness, Faulty fan timer logic

Safety: Turn off power before accessing blower or control board.

Steps to check:

Harness connections: Reseat the ECM motor plug and control board connectors.
Thermostat fan setting: Ensure fan is set to AUTO.

If surging continues, a technician should diagnose the ECM motor and control board and replace the faulty component with Luxaire-approved parts.

Hard 4/5

ECM Blower Motor Module

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