[Power sequence board] DC power abnormality (24V). (for E0x series controllers)

Error handling: Controller power OFF;
Error reset: Possible

Description: The DC24V power supplied from the control power AVR to the power sequence board is outside the rated range.

Main causes:

1. Controller power was switched off using external remote OFF.

2. The control power supply AVR is faulty.

3. A problem with the power sequence board.

4. The 24V power supply wiring inside the controller has a ground fault or short circuit.

Countermeasures:

1. Check whether controller power was switched off using external remote OFF. *

2. Replace the AVR.

3. Replace the power sequence board.

4. Check the 24V wiring inside the controller for a ground fault or short circuit.

• This error may occur when the external control power OFF function is used to turn the control power OFF, but this does not indicate an abnormality.