Error code reference

Lennox Air Conditioner Error Code E441

Compressor slowdown due to high compressor current

Compressor slowdown due to high compressor current — compressor current is approaching limit (inverter code 14).

First step from the service manual

Check for high pressure trips or other alert codes in room thermostat and outdoor control.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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E441 on my Lennox Air Conditioner

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Compressor slowdown due to high compressor

From Service Manual 873136, p.28:

1.Check for high pressure trips or other alert codes in room thermostat and outdoor control.

2.Measure door lock assembly resistance across the PTC terminals. Expected: ~200 ohms cold, rising sharply once energized.

3.Inspect strike and latch alignment. A warped door or misaligned strike prevents the switch stack from closing in the correct sequence.

Part W10810403

Door lock assembly

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