guoke1225 Posted January 12, 2023 Posted January 12, 2023 the TB1 watchdog relay output is closed, but the LED lamp for watchdog is not light, what's wrong? the TB1 is normal open if no watchdog is trip. how to fix it. thanks. Quote
steve.milici Posted January 13, 2023 Posted January 13, 2023 Being able to communicate to the PMAC would indicate there is no WD condition. This could be due to a defect with the relay and this CPU will require repair. What is the serial number of this CPU? Where are you located? Quote
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