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E11

Error E11 — Address setting error of indoor units

Mitsubishi Heavy Industries · Air Conditioners

What does E11 mean?

This error occurs when the indoor unit address was incorrectly set using the 'Master IU address set' function on the remote control. Addresses for this system should be set directly via DIP switches on the indoor unit PCB.

Common Causes

  • Incorrect address setting method (attempting to set address from the remote control instead of DIP switches)

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off the main power to the unit.

  2. 2

    Locate the DIP switch SW2 on the indoor unit control PCB.

  3. 3

    Set the indoor unit address using the DIP switches as instructed in your product manual.

  4. 4

    Ensure the 'Master IU address set' function of the remote control is not used for this address setting.

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
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