Found system low on Freon. Topped off Freon for temporary cooling. Expect Freon will leak back out. Customer declined leak search at this time. System uses old type of Freon (R22) Checked temperature drop. 15.5. Recommend adjusting blower speed lower. Customer complaint: Had to push in contactor to get AC going last year(happened twice). Work suggested: Freon leak search: $189. Freon leak repair: $? Recommend second transformer for UV lamp.