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Shrill sound or unpleasant odor during operation

Shrill sound or unpleasant odor during operation

York · Air Conditioning

What does Shrill sound or unpleasant odor during operation mean?

A very loud, shrill noise or a strong unpleasant smell is emitted while the unit is running. This requires immediate attention.

Common Causes

  • Serious internal malfunction
  • Electrical issue
  • Refrigerant leak with odorants

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Immediately stop all operations.

  2. 2

    Cut off the power supply to the unit.

  3. 3

    Contact the service center urgently.

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
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