The rented house did not come home for a few days, and the balcony water pipe was frozen and damaged

You may be responsible for it, because the house is rented to you, you have the right to use it, and at the same time you have to maintain it, because of the problems caused by your human factors, so you are responsible.

In any case, it was wrong for the landlord to change the locks. >>>More

This problem is more complicated, because it is the water pipe on the balcony, and if it is a rainwater pipe in the structure of the house, then it also involves the housing management department, and the housing management office should be responsible for maintenance. If the drain is installed by the landlord himself during the renovation, the landlord is responsible. Tenants also made mistakes in mismanagement, failing to detect the leak in time and failing to take immediate action to avoid escalating the situation. >>>More

It depends on what your landlord's attitude is, this kind of thing belongs to your use mistake, and if the landlord doesn't plan to compensate you, there is no way.

Find a property claim, take a good picture of the evidence, find a good person to sign the formalities, and then sue the property