No heat. On arrival the mini split was found to be running but not producing heat. The charge was found to be almost completely empty in the system. There was an attempt to pull a vacuum on the system but it froze up around 2500 microns. Nitrogen was then added to the system and a leak search was performed. Signs of a small leak where found in the larger living room cassette. The homeowner is going to look at repairing or replacing this cassette.