CPU fault
CPU Fault
Mitsubishi Electric · FR-D700 Basic Inverter
What does CPU fault mean?
An error has occurred within the inverter's Central Processing Unit (CPU) or its associated peripheral circuits. This is a critical internal hardware or software issue, potentially leading to a complete loss of control and unpredictable inverter behavior. Continued operation or neglect may result in further hardware damage or system unresponsiveness.
Complete Troubleshooting Guide
- 1
Take immediate measures to mitigate excessive electrical noise if there are devices producing it around the inverter.
- 2
If the situation does not improve after implementing noise reduction, contact your sales representative for advanced diagnostics or repair.