88 — Power module trouble

What does 88 mean?

This error indicates a malfunction within the power module of the outdoor unit. The power module is responsible for controlling the compressor and other power-hungry components.

• Internal failure of the power module.
• Short circuit within the unit.
• Excessive electrical load on the power module.
• Component overheating due to inadequate cooling.

Click steps to track your progress.

1. 1

   Turn off the main power to the outdoor unit immediately by switching off the dedicated circuit breaker.

2. 2

   Wait for at least 15 minutes before attempting any further action to allow components to discharge.

3. 3

   Visually inspect the power module area inside the outdoor unit for any signs of damage, burning, or discoloration.

4. 4

   Check for any obvious loose wiring connections to or from the power module.

5. 5

   This issue often requires a qualified service technician to diagnose and replace the power module.