Error Code COMP_POSITION_ERROR

Inverter cannot detect compressor rotor position

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: Inverter PBA LED blinks

What This Means

Compressor wiring CN102 open circuit; Bad soldering on resistor R1; Short or open on R515, R516, R517; Compressor internal failure; Refrigerant cycle issue

What actually causes this:

The inverter board's motor position detection algorithm has lost track of the compressor rotor, often due to a seized compressor or wiring fault.

First Thing to Check

Check for any loose wires at the compressor terminal block (CN102).

Parts Involved

Inverter PCBCompressor (CN102)Resistors R515/R516/R517/R1/R2

How to Fix

  1. 1

    Check compressor connections at CN102

  2. 2

    Check voltage across R2 (0.09 ohm shunt resistor)

  3. 3

    Inspect MAIN PCB soldering

  4. 4

    Check resistors R515, R516, R517 for shorts or opens

  5. 5

    Check compressor and cycle

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