PC11 — Outdoor unit main control board DC bus high voltage protection

Was bedeutet PC11 ?

The DC bus voltage on the outdoor unit's main control board has become excessively high, triggering a protective shutdown.

• Power surge
• Faulty components on the main control board
• Issues with power conversion circuitry

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Ensure the unit is protected from power surges.

2. 2

   Reset the system by turning off the power breaker for 30 seconds, then turning it back on.

3. 3

   If this error repeats, the main control board likely requires professional diagnosis and replacement.