"You must take steps to maintain the Home in a good state of repair and take all reasonable precautions to avoid loss, damage or injury and to safeguard all property insured from loss or damage."
These things are pretty standard - I would be very surprised if there isn't a similar clause in all of them.
Which implies that, if you fail to do so, they don't have to pay up.
The wording in your policy may be different. What are "reasonable steps" will depend on legal precedent. It may, for example, take into account that you're not an expert, and will probably include some reasonable time to get stuff fixed. But certainly it provides them the opportunity to deny a claim.
Obligatory disclaimer: I am not a lawyer or insurance expert, get your own advice if you need it.