5. Check humidifier lamps (replace if burnt out)
6. Check/Re-torque wire connections (inside humidifier box)
7. Check humidifier high-water alarm operation
8. Humidifier amp draw
L1 L2 L3
Condensate Pump (if equipped)
1. Check for debris in sump
2. Check operation of float(s) (free movement)
3. Check/Clean discharge check valve
Electrical Panel
1. Check fuses
2. Check contactors for pitting (Replace if pitted)
3. Check/Re-torque wire connections
Controls
1. Check/Verify control operation (Sequence)
2. Check/Test changeover device(s) (if equipped)
3. Check/Test water-detection device(s) (if equipped)
4. Check/Test CAN connection between indoor and outdoor units (if equipped)
Refrigeration Piping
1. Check refrigerant lines (clamps secure/no rubbing/no leaks)
2. Check for moisture (sight glass)
3. Check for restriction temperature drop across filter drier
Vertiv | Liebert® DSE™ Installer/User Guide
76
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