LG AC Not Functional Repair in Chennai

LG split and window air conditioners—especially modern Dual Inverter models—rely on sensitive electronic control boards and protective sensor logic. When an LG AC trips your home's MCB, restarts continuously, or cuts off within minutes of starting, it is usually responding to a critical electrical or thermal anomaly. During humid Chennai summers, severe heat load combined with coastal voltage fluctuations often triggers these protective shutdowns to prevent permanent compressor failure.

• The indoor unit powers on, displays an error code (such as CH05, CH10, or CH38), and shuts down immediately.
• The main circuit breaker (MCB) trips the moment the outdoor inverter compressor attempts to engage.
• The system enters a continuous restart loop without delivering cold air.
• The display panel turns off completely mid-cycle and becomes unresponsive to the LG ThinQ remote.

• Outdoor Unit PCB Failure: Dust, moisture, or insect intrusion on the main inverter PCB causing short circuits or communication errors between indoor and outdoor modules.
• Dual Inverter Compressor IPM Short: Overheating or voltage spikes damaging the Intelligent Power Module (IPM) on the drive board.
• Defective Run Capacitor or Reactor: Degraded capacitors on older LG models preventing the compressor motor from sustaining required voltage.
• Thermistor / Sensor Drift: Faulty discharge pipe or ambient temperature sensors sending incorrect thermal data to the microprocessor, triggering automatic safety cut-offs.
• Clogged Condenser Coils: Extreme dirt accumulation causing high-pressure trip-outs in heavy heat.

1. Diagnostic Scan & Error Code Retrieval: Our technicians inspect the LG indoor and outdoor PCBs to read exact error codes and measure operating voltages.
2. Electrical & Winding Testing: We check compressor terminal resistance, IPM output, and insulation integrity using insulation testers and digital multimeters.
3. Component-Level Repair or Replacement: Damaged PCBs, sensors, or capacitors are repaired or replaced using high-grade components tailored for LG inverter drive systems.
4. Deep Coil & Airflow Service: Condenser and evaporator coils are jet-cleaned to normalize operating pressures and eliminate thermal tripping.
5. Load Testing: We run the unit through full cooling cycles to verify steady amp draw and baseline cooling performance under Chennai's climate conditions.

Don't let a tripping or shutting-off LG AC ruin your comfort. Janani Cool Care offers prompt, multi-brand diagnostic and repair services across all Chennai neighborhoods, backed by a 30-day service warranty. Call +91 99410 82878 today to schedule a technician visit.