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error Tesy
Error Code OE
Overheating error — heating element overheats.
? What Causes This
Thermostat malfunction or excessive debris on the heating element.
✓ How to Fix It
- Turn off water heater and check thermostat connections.
- Clean heating element from accumulated scale, limestone.
- Replace faulty components if necessary.
Source: page 58 of the official manual
From the manual
This error code appears in:
Tesy Electric Water Heater