Roller shutter floor-to-ceiling window broken

Hello everyone,
it's about the following phenomenon! We have now been living in our new building for the third year. On the top floor on the west side, we have two floor-to-ceiling windows with electric shutters. Two weeks ago, I wanted to open the shutter in the bedroom in the morning. It made a short "jerk" as if something had broken and since then the shutter has not gone up. So and this morning, the same thing happened in the children's room next door.

How can this be? Does it have anything to do with the heat over the past weeks? And what about the warranty?

The craftsman was informed and is supposed to come in the next few days.

It can have to do with the heat. If it jerks and then stops, it may be jammed and the overload protection kicks in. Does it work if you assist manually?

How can that be?

Broken? For example, due to the heat. Or the motor is permanently too weak for the roller shutter. Haven't you even looked inside the roller shutter box to see what is there?

And what about the warranty?

Normally, it is five years. But not warranty, rather liability for defects ;-) In the end, it depends on what is stated in your contract. Building Code or VOB? VOB is four years. And with VOB there are also restrictions for electrical installations.

And what about the warranty there?

We can't know that. It's stated in your contract. Otherwise, according to the Building Code or VOB.

The craftsman has been informed and should come in the next few days.

Unfortunately, that's your only option.