Troubleshooting And Fault Handling Of Cooling System - Vertiv Liebert XDH User Manual

7.3. Troubleshooting and Fault Handling of Cooling System

When a cooling system component fails, analyzed and dealt with the cause immediately to avoid the abnormal operation of
the units. The troubleshooting and fault handling of the cooling system are provided in the
Symptom
Condensation on
the surface of the
evaporator
Airflow volume is
reducing
Vertiv™ | Liebert® XDH | User Manual
Table 7-3 Troubleshooting of the Key Components of the EEV
Possible Causes Items to be Checked or Handling Method
Two-way water Check whether the two-way water valve is malfunctioning, and the
valve failure water temperature is too low due to the imbalance.
Whether the
Check the cleanliness of the surface of the evaporator. Dirt
surface of the
blockage on the surface may cause the condensate not to drain
evaporator is dirty
properly.
and blocked
Dirty and blocked Regularly check the cleanliness of the filter and replace it to avoid
filter net reduction of air volume caused by clogging of dirty filter.
Fan failure Check whether the fan is malfunctioning.
Dirty or blocked Check the cleanliness of the surface of the microchannel
evaporator evaporator, and clean it regularly.
Table 7-3.
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