Emerson VERTIV Liebert Mini-Mate2 MM2CF - Page 115

Problem Cause Remedy
Compressor cycles on locked
rotor
Low line voltage Check line voltage and determine location of voltage drop.
Compressor motor defective Check for motor winding short or ground.
Single phasing Check voltage across all 3 legs at contactor. Correct source of problem.
Motor burnout
Check control panel for welded
contactor contacts or welded overload
contacts.
Replace defective components.
Table 5.1 Troubleshooting (continued)
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