CodeRegistry
Brands
  1. Home
  2. Fujitsu
  3. Air Conditioners
  4. Delayed operation after restart
About·Privacy·Terms

CodeRegistry — Your global library for technical solutions.

For your safety: always follow the equipment manufacturer’s official manuals. CodeRegistry is an independent help site and is not affiliated with the brands listed here.

Delayed operation after restart

Operation is delayed after restart — Compressor protection

Fujitsu · Air Conditioners

What does Delayed operation after restart mean?

If the power supply has suddenly turned off and then on again, the compressor will not operate for approximately 3 minutes. This is a built-in protection mechanism to prevent a fuse blowout.

Common Causes

  • Sudden power fluctuation (Off to On), triggering a compressor protection delay.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    This is a normal protective measure by the air conditioner system.

  2. 2

    Wait approximately 3 minutes for the compressor protection delay to pass.

  3. 3

    The unit should then resume normal operation automatically once the delay concludes.

Browse all codes in this manual (118)
Verified technical data. Last updated: April 2026

Related Faults

11Error 11 — Serial communication error (Indoor unit not sending signal)12Error 12 — Wired Remote Controller Communication Error18Error 18 — External communication error
Source: Fujitsu Air Conditioners
Open Manual (Page 14)Search more codes in this manual