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ErrorLib — Industrial Fault Code Library

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E0-E5

Remote Controller Transmitting Error

Mitsubishi Electric · PAR-21MAA MA Remote Controller

What does E0-E5 mean?

This range of codes (E0 through E5) indicates an error in the transmission of data from the remote controller, as displayed on the remote controller LCD. For specific diagnostic details regarding the root cause, further reference to the detailed error code list in the manual is required.

Common Causes

  • Remote controller not sending valid signals to the indoor unit.
  • Interference on the communication line between remote and indoor unit.
  • Faulty wiring or loose connections at the remote controller or indoor unit terminals.
  • Internal failure of the remote controller's transmission circuitry.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Refer to the 'Error code list' in section 'V.4.2.Error code list' of the complete manual for specific diagnostic information related to E0-E5 codes.

  2. 2

    Verify the remote controller wiring and connections to the indoor unit for integrity, secure attachment, and proper installation.

Browse all codes in this manual (26)
Verified technical data. Last updated: April 2026

Related Faults

----No Error History00Communication Error (Indoor/Outdoor/Remote Controller)A0~A8M-NET System Communication Error
Source: Mitsubishi Electric PAR-21MAA MA Remote Controller
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