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power outage error

Abnormalities continue after power cycle — Persistent fault, contact dealer

MHI · Air Conditioning

What does power outage error mean?

If you experience any abnormality with the air conditioner, and it persists even after turning off the power source, waiting 3 minutes, and restarting the operation with the remote control, it indicates a persistent fault.

Common Causes

  • Internal component failure not resolved by a simple reset.
  • System error requiring professional diagnosis.
  • Problem with power supply or unit's internal circuitry.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off the main power switch to the air conditioner.

  2. 2

    Do not attempt further troubleshooting if the issue persists.

  3. 3

    Contact your dealer or a qualified service technician for service.

Browse all codes in this manual (124)
Verified technical data. Last updated: April 2026

Related Faults

00Outdoor Board LED only green lights up after startup - No outdoor unit of address 0 / Remote controller transmission wire open1OPERATION INDICATOR lamp blinks 1 time (Pattern A) - Indoor/outdoor unit communication error (Transmitting error - Outdoor unit)14OPERATION INDICATOR lamp blinks 14 times (Pattern A) - Other errors
Source: MHI Air Conditioning
Open Manual (Page 37)Search more codes in this manual