Complaint: Server Room Freezing up No cool found blower not coming on, found bad relay, wired motor hot, checked charge RSP installed a head pressure control with no tee so can’t check high pressure. Need to come back to change relay, head pressure control and a tee. Wired around head pressure control, charged to 15 degrees superheat. Returned and replaced high pressure switch with fan cycle control with a tee, replaced blower relay. Tested unit operating as it should