info Itho Daalderop

Status LED continuously green

Indicates resetting after power on or error recovery attempt.

? What Causes This

System going through initialization or error reset process.

What This Means

Appliance will return to normal operation upon completion of reset sequence.

Source: page 36 of the official manual

From the manual

Manual page 36 — Itho Daalderop error LED continuously green

This error code appears in:

Itho Daalderop 120l Smart Upp Boiler