⚠
warning Itho Daalderop
Error Code B3
Overload protection — overheating of water temperature sensor
? What Causes This
High temperatures from hot water causing sensor malfunction.
✓ How to Fix It
- Wait until the heater has cooled sufficiently.
- Draw off enough hot water for error correction.
Source: page 38 of the official manual
From the manual
This error code appears in:
Itho Daalderop 120l Smart Upp Boiler