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Airlux
Air Conditioner
Data independently verified by Elite B2B Technicians
Diagnostic Complet

Error Code F4 Airlux

Symptom / Description

Outdoor tube sensor open or short circuit

Root Cause

The defrost heater has failed, meaning the appliance cannot melt the ice off the evaporator coils.

Repair Instructions

UNLOCKED

Inspect or replace outdoor coil (tube) temperature sensor.

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