!
error Itho Daalderop
Error Code E20
Boiling dry — heater malfunction or not filled with water properly.
? What Causes This
Water leakage causing empty vessel.
✓ How to Fix It
- Turn off power and fill the unit.
- Correct error after re-fueling.
Source: page 41 of the official manual
From the manual
This error code appears in:
Itho Daalderop 120l Smart Upp Boiler