Furnace displays E19, intermittent operation, sometimes accompanied by clicking relays.

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

Faulty fan speed sensor, Blocked fan wheel, Defective ECM fan motor, Control board fan driver fault

Safety: Turn off power before accessing the fan compartment.

Steps:

Inspect fan wheel: Check for dust buildup, foreign objects, or damage to the blades. Clean thoroughly.
Check fan connector: Ensure the multi-pin connector from the fan motor to the control board is fully seated and free of corrosion.
Spin test: Rotate the fan by hand to confirm it moves smoothly without grinding or tight spots.

Professional service: Testing the tachometer signal and replacing an ECM fan motor or control board should be done by a qualified technician.

Hard 4/5

ECM Circulation Fan Motor

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