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40

Error 40 — Indoor unit E liquid pipe temperature sensor malfunction

GE Appliances · Air Conditioning

What does 40 mean?

This error code indicates a failure of the liquid pipe temperature sensor for indoor unit E. This sensor is part of the EEV circuit.

Common Causes

  • Bad sensor connection
  • The sensor is bad
  • Sensor resistance drift
  • The temperature acquired by PCB is not accurate

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the sensor wiring connection to the PCB.

  2. 2

    Test the sensor resistance.

  3. 3

    Replace the sensor if faulty or out of range.

Browse all codes in this manual (62)
Verified technical data. Last updated: April 2026

Related Faults

1Error 1 — Outdoor PCB EEPROM fault10Error 10 — Defrost sensor fault11Error 11 — Compressor suction temperature sensor fault
Source: GE Appliances Air Conditioning
Open Manual (Page 23)Search more codes in this manual