TM 55-1945-205-24-40028 00 10028 00UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCEFLOATING CAUSEWAYHEATING AND AIR CONDITIONING SYSTEMTROUBLESHOOTING PROCEDURESINITIAL SETUP:Test EquipmentMultimeter (Item 30, WP 0253 00)Personnel RequiredEngineer 88LUtilities Equipment Repairer 52CReferencesTM 55-1945-205-10-4TROUBLESHOOTING PROCEDURECOMPRESSOR WILL NOT START, HUMS AND CYCLES ON THE OVERLOAD SYMPTOMCompressor will not start, but hums and cycles on the overload.MALFUNCTIONThe compressor is defective.CORRECTIVE ACTIONReplace compressor. Contact depot maintenance.MALFUNCTIONCompressor system has low voltage running to it.CORRECTIVE ACTIONUsing multimeter, check continuity between compressor motor black wire and other compressor wires. If continuity is not present, repair/replace wiring as necessary. (WP 0248 00)Perform operational check on heating and air conditioning system. (TM 55-1945-205-10-4)MALFUNCTIONCompressor system wiring is defective or incorrectly wired.
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