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2

OPERATION INDICATOR lamp blinks 2 times (Pattern A) - Open/short of outdoor unit thermistors

MHI · Air Conditioning

¿Qué significa 2 ?

The OPERATION INDICATOR lamp blinks twice in 'Output pattern A' from the indoor unit, suggesting that there is an open circuit or short circuit in the outdoor unit's thermistors.

Causas comunes

  • Open circuit in outdoor unit thermistors.
  • Short circuit in outdoor unit thermistors.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Check if connectors (TH3, TH32, TH33, TH4, and TH7/6) on the outdoor controller board and connector (CN3) on the outdoor power board are not disconnected.

  2. 2

    Measure the resistance value of the outdoor thermistors using a tester to check for open or short circuits.

  3. 3

    Ensure all wiring connections to the thermistors are secure and undamaged.

Ver todos los códigos en este manual (124)
Datos técnicos verificados. Última actualización: April 2026

Fallas relacionadas

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
Fuente: MHI Air Conditioning
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