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E3

E3 Error Code — Indoor coil temperature sensor fault

York · Air Conditioning

What does E3 mean?

The indoor coil temperature sensor is faulty. This can lead to incorrect temperature control and affect the unit's efficiency.

Common Causes

  • Defective indoor coil temperature sensor
  • Loose or damaged sensor wiring
  • Signal interference to the sensor

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure the air conditioner is turned off.

  2. 2

    Inspect the indoor coil temperature sensor and its connections for any issues.

  3. 3

    If the issue remains, seek assistance from a professional service provider.

Browse all codes in this manual (26)
Verified technical data. Last updated: April 2026

Related Faults

Abnormal heat in power supply cord and power plugAbnormal heat in power supply cord or plugAccidental pour of impurities or water into machine or remote controlLiquid or foreign objects inside the unit or remoteAir conditioner can not operate at allAir conditioner will not operate at all
Source: York Air Conditioning
Open Manual (Page 13)Search more codes in this manual