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36

Outdoor heat exchanger sensor wire disconnected — RUN LED flashes 3 times, TIMER LED flashes 6 times

Mitsubishi Heavy Industries · Air Conditioners

What does 36 mean?

The system detects that the outdoor heat exchanger sensor wire is disconnected. This prevents the unit from accurately monitoring temperatures and can lead to incorrect operation.

Common Causes

  • Outdoor heat exchanger sensor wire is disconnected
  • Poor connector connections for the sensor
  • Faulty outdoor PCB

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off the main power to the unit.

  2. 2

    Locate the outdoor heat exchanger sensor, usually within the outdoor unit.

  3. 3

    Inspect the sensor wire for any visible disconnections, cuts, or damage.

  4. 4

    Check the connector connections for the sensor, ensuring they are securely plugged in and free from corrosion.

  5. 5

    Reconnect any loose wires or connectors firmly.

Browse all codes in this manual (110)
Verified technical data. Last updated: April 2026

Related Faults

01Power source faulty — RUN LED OFF, TIMER LED flashes 1 time05Wired remote control wiring error — RUN LED OFF, TIMER LED flashes 5 times35Cooling high pressure control activated — RUN LED flashes 3 times, TIMER LED flashes 5 times
Source: Mitsubishi Heavy Industries Air Conditioners
Open Manual (Page 53)Search more codes in this manual