Description
An abnormal voltage value was detected in the control power supply unit.
Subcode description
Causes and remedies
| Cause | Remedy |
|---|---|
| Control power supply unit (abnormal) | 1. Reset the alarm. 2. If the alarm recurs, turn the power off and back on. 3. If the alarm recurs, replace the following units. • Control power supply unit |
| Short circuit / ground fault | 1. Reset the alarm. 2. If the alarm recurs, check the 24V power-supply connections at the following connectors, and check for short circuits or ground faults. • AIO-CN306, CN307, CN308, CN309 |
| Other | If the alarm occurs again after implementing the countermeasures, contact our service department and describe the circumstances when CMOS.BIN was saved (operating procedure, etc.). |