Is it legal for the property or owners' committee not to let the owners install solar water heaters?

I answered such a question and it was adopted by the questioner. Please look at my answer.

The roof is a part of * * * and belongs to all the owners (the building). The property management company has no right to prohibit owners from using it, as long as it does not endanger the safety of the house and does not harm the interests of other owners, you can rest assured! You can report this matter to the competent department of urban construction administration to fight for your legitimate rights and interests, or you can directly sue for rights protection in your court. You are sure to win! Good luck!