H12-421-ENU 試験問題を無料オンラインアクセス

The alarms of all devices can be displayed on the NetEco, but the corresponding alarm automatic formation work orders cannot be sent to the processor.

• A.FALSE
• B.TRUE

After the NetCol5000-A25kW half-cabinet air-conditioning refrigerant pipeline is installed, do the nitrogen charge pressure maintaining, the nitrogen pressure is () Mpa.

• A.0.8
• B.2
• C.3
• D.2.5

The function of Counter irrigation protection card is when energy reversal occurs in the main road or bypass. The counter irrigation protection card sends a drive alarm signal, and the drive trip switch (customer self-configure) is disconnected, which acts as counter irrigation protection.

• A.True
• B.False

NetCol5000-C temperature and humidity sensor dial setting is incorrect may result in ().

• A.The return air temperature or fan speed fluctuates greatly
• B.Temperature and humidity sensor cannot detect temperature and humidity
• C.Equipment drainage capacity is significantly reduced
• D.Water leakage at the bottom of the equipment

When the unit is working, the load of the UPS2000-G is connected to the PL, what condition will cause the load to be de-energized? (Multiple choice)

• A.Mains low voltage
• B.Mains input interruption
• C.Overload
• D.Battery low voltage