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Resistance of reactor (L111) not approximately 4.3 Ω

Reactor (L111) resistance not approx. 4.3 Ω — Indoor P.C. board issue

Mitsubishi Electric · Air Conditioning

What does Resistance of reactor (L111) not approximately 4.3 Ω mean?

The resistance of the reactor L111 on the indoor power P.C. board is not approximately 4.3 ohms. This suggests a fault with the reactor or the associated circuitry on the board.

Common Causes

  • Faulty reactor L111 on indoor P.C. board
  • Damage to the indoor power P.C. board

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off the power supply.

  2. 2

    Replace the indoor power P.C. board.

  3. 3

    Ensure all connections to the board are secure.

  4. 4

    Verify the resistance after replacement.

Browse all codes in this manual (170)
Verified technical data. Last updated: April 2026

Related Faults

0.5-second ON / 0.5-second OFF blinkUpper lamp blinks 0.5-second ON/OFF - Miswiring or serial signal error00Normal operation - No error codes1 beep during error display mode1 beep during error display mode - Unit has an error (different code)
Source: Mitsubishi Electric Air Conditioning
Open Manual (Page 27)Search more codes in this manual