More trouble from above

Progress:
Still no sign of progress - but on Thursday, the project leader stopped by and saw with his own eyes the long icicles hanging from our roof. It may be difficult to notice on the attached picture, but there are no icicles on our neighbor's house. After the visit, he said that they agree that this must be fixed (free of charge) and that the solution is adding more isolation to the pipes on the attic (so that the ventilation system looses less heat to the attic).

He also heard (for the first time) the noice from the fan that blows heated air (from the heatpump) into the ventilation system. Afterwards he said that this must be fixed. He has now told us that he will get the ventilation subcontractor to come to the house again next week to discuss the remaining tasks.

During the weekend I have been outside to check out the status of the heatpump. I was surprised to find more than 75% of the intake covered with ice! (see the attached pictures)

The intake is where the heatpump sucks in  air before it "heats up"  the coolant and is blown out again even colder than when it was sucked in (normal heatpump process). Is this normal maintenance or an issue that needs to be resolved? I have forwarded this information to the ventilation team and asked for advice (they have not told us to regularly check the heatpump and remove ice from the intake).