Tech came out to confirm diagnosis on RTU #1 (serial number 056L). Tech found line voltage fuse blown inside disconnect. Tech does not have that fuse size. 480 volt three phase belt-driven blower motor will not start due to losing a leg of power. Tech ohm tested blower windings and found no challenges, but blower may be failed/inoperable due to single phasing. Would need fuse to confirm. Confirmed 10uf fan capacitor is weak. Confirmed compressor 1 plug is burnt and circuit 1 is void of 7.2 lbs of R22. Fusible terminals are burnt, but intact. There is likely a refrigerant leak elsewhere in the circuit. Compressor 1 has been replaced in the past. Confirmed ohm reading to ground with multimeter and megohmmeter. There is standing R22 pressure in circuit 2, but tech confirmed compressor 2 continuity to ground with multimeter and megohmmeter. Circuit 2 takes 5.3 lbs of R22. Tech confirmed previous tech findings. Tech recommends system replacement due to age of system, EPA phase out of