Applicable Systems
AC500
AC590
ACS580
ACS880
Symptoms
Heatsink overtemperature detected.
Possible Causes
- Cooling fan failure
- Heatsink clogged with dust
- Ambient temperature too high
Troubleshooting Steps
- Step 1: Check cooling fan operation
Fan running at rated speed - Step 2: Clean heatsink fins
Fins clean and unobstructed - Step 3: Reduce ambient temperature
Temperature within rated range
How to Reset
Reset via control panel after temperature normalizes.
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Source: ABB ACS510/550 User Manual, ABB Drives
Category: PLC & VFD
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