When going away on vacation or even leaving your home for an extended period of time, you must have your home checked on by a competent person frequently.
Some insurers require the home to be checked EVERYDAY after you have been away for 4 days. This not only is an insurance requirement but also a good practice. Your home is one of your biggest investments and you want to make sure it is fully protected in the event of a loss.
You should always discuss what is required by your insurance company with your broker before you go away for an extended period.