This section of the Far Bar As-Is is pretty straight forward. The Seller must maintain the Property in the condition it was in on the Effective Date of the Contract….
One of the reasons for the Walk-Through is to make sure that the Seller has maintained the Property…
If the Seller has not then the Buyer may have a case for cancelling the Contract. This is not something which is spelled out in the Contract though and thus they would need to litigate it.
Please be sure to tell your Seller to keep the AC on, pool and lawn guys coming until Closing.