Applicable Systems
WJ200
Symptoms
Safety circuit operation fault; main microcomputer and INV microcomputer communication abnormal
Possible Causes
- Safety circuit opened
- main-inverter communication link failure
- safety relay fault
Troubleshooting Steps
- Step 1: Check safety circuit continuity
Verify the fault is resolved after completing this step. - Step 2: verify communication link
Verify the fault is resolved after completing this step. - Step 3: inspect safety relay
Verify the fault is resolved after completing this step.
How to Reset
Power cycle after repair
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Category: Elevator
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