⚠
warning Miller
Error Code L11
Coolant Overtemp Limit — the coolant temperature has exceeded the maximum operating temperature.
? What Causes This
Low coolant flow or level, clogged coolant filters, failed heat exchanger, excessive turns or improper insulation thickness.
✓ How to Fix It
- Check coolant flow and level.
- Clean coolant filters and heat exchanger.
- Increase number of turns.
- Verify appropriate insulation thickness.
Source: page 55 of the official manual
From the manual
This error code appears in:
Miller ProHeat 35 Industrial Heater