Applicable Systems
GA700
GA500
A1000
V1000
J1000
Symptoms
Phase loss: input phase missing.
Possible Causes
- Missing input phase
- Input fuse blown
- Loose input connection
Troubleshooting Steps
- Step 1: Measure all three input phases
All phases present - Step 2: Check input fuses
All fuses intact - Step 3: Inspect input connections
All connections tight
How to Reset
Reset via digital operator after restoring all phases.
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Source: Yaskawa GA700 Technical Manual, Yaskawa Electric
Category: PLC & VFD
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