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amypowersAug 1, 2025
How to troubleshoot a Parker Controller when the 'Power On' LED is not illuminated, but the drive doesn't operate?
- GgraycristinaAug 1, 2025
If the 'Power On' LED is not illuminated and the drive isn't operating, here's what you can check: * First, verify auxiliary supply availability by checking if the supply fuse is fitted or the circuit breaker is closed. * If the supply fuse is blown, investigate contactor connections or the transformer tapping switch position. * Confirm that the supply voltage is compatible with the transformer tapping switch position. * Ensure the auxiliary supply switch setting is correct.