Yaskawa GA700 Error Code oH

Yaskawa PLC & VFD Major Overtemperature

Model: GA700 | Code: oH

Applicable Systems
GA700 GA500 A1000 V1000 J1000

Symptoms

Heatsink overheat alarm: temperature approaching trip limit.

Possible Causes

  • Cooling inadequate
  • Heavy duty cycle
  • Ambient too hot

Troubleshooting Steps

  1. Step 1: Check ventilation
    Airflow unobstructed
  2. Step 2: Verify cooling fan
    Fan running
  3. Step 3: Reduce duty cycle
    Temperature below alarm

How to Reset

Auto-clear when temperature drops.

Related Yaskawa Fault Codes

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Source: Yaskawa GA700 Technical Manual, Yaskawa Electric

Category: PLC & VFD