Undervoltage Error

What does 02 mean?

This fault indicates that an undervoltage condition has been detected by the controller circuit board during operation or error postponement (U9 status). Prolonged undervoltage can cause motors to overheat, components to malfunction, or the unit to fail to start or operate correctly, leading to system instability and potential damage.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Examine the controller circuit board for any visible damage. Ensure all power connections on the board are secure.

2. 4

   If the incoming power is stable and sufficient, and no wiring issues are found, consider replacing the controller circuit board.