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Vertiv / Precision air conditioning

Liebert DME12MCP5 Equipment information & support

The Vertiv Liebert DME12MCP5 is a 12.5kW high sensible heat precision environmental control unit engineered for server rooms, telecom exchanges, and laboratories, offering 24/7 continuous duty with tight ±1°C and ±5% RH control.

Equipment information

Brand
Vertiv
Equipment model
Liebert DME12MCP5
Equipment type
Precision air conditioning
Controller / software version
Confirm against the installed equipment
View full product specifications
Vertiv Liebert DME12MCP5 Precision Data Center Air Conditioner (12.5kW Sensible Heat Ratio >0.9) - Isometric 45-Degree Angled View

Information below comes from the current product catalogue. Confirm the controller, software version and configuration of the installed equipment separately.

Rated Cooling Capacity
12.5kW Precision Sensible Cooling
Circulating Airflow Volume
3200 m³/h (High Volume, Low Enthalpy)
Supply Air Fan Architecture
Electronically Commutated (EC) Centrifugal Fan
Microprocessor Controller
Liebert Microprocessor + Graphic LCD
Sensible Heat Ratio (SHR)
>0.90 (Optimized Server Heat Removal)
Refrigeration Compressor
Copeland High-Efficiency Scroll Compressor

Alarms & troubleshooting

AC_IN_FAIL / MAINS_LOST
Input Amber / Alarm Red solid
Utility grid failure, AC breaker tripped, or line voltage out of range
1. Measure incoming AC voltage with a multimeter; 2. Check input circuit breaker and upstream distribution; 3. System automatically soft-starts upon power restoration.
DC_OV_SHUTDOWN / LOCKOUT
Alarm Red solid, module output locked out
DC bus overvoltage or internal feedback sensor fault
1. Measure actual DC bus terminal voltage; 2. Cycle AC supply breaker to discharge capacitors and reboot; 3. Replace power module if fault recurs persistently.
FAN_FAIL / OVER_TEMP
Temp Yellow solid, fan halted or derated
Air intake dust blockage or fan bearing obstruction
1. Clean dust accumulation from intake grilles and filters; 2. Verify ambient room air conditioning is operational; 3. Replace cooling fan if rotation remains stalled.

Access Complete Maintenance & Full Alarm Troubleshooting Manual

This page lists high-frequency critical alarm codes commonly encountered in field maintenance. Comprehensive manufacturer troubleshooting matrices, board-level repair guides, detailed electrical schematics, and firmware commissioning manuals are delivered alongside equipment upon formal project procurement, accompanied by dedicated FAE technical support.

Contact Account Manager for Full Manual

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