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Running indicator flashes

Running indicator flashes — Unit is defrosting

York · Air Conditioning

What does Running indicator flashes mean?

The Running indicator on the indoor unit flashes when the appliance is in defrosting mode during heating operation. This is a normal part of the heating cycle to improve efficiency.

Common Causes

  • Normal automatic defrost cycle during heating operation

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Understand that the flashing indicator signals a normal defrosting process.

  2. 2

    Wait for the defrost cycle to complete, after which the indicator will become solid and the unit will resume normal heating.

  3. 3

    No user intervention is required during this process.

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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