H12-421-ENU 試験問題を無料オンラインアクセス

When the differential pressure switch of the air filter of the indoor unit is closed, it indicates that the filter is too dusty and should be disposed of in time.

• A.False
• B.True

After the UPS5000 is installed with ejector fan, you need to set the status of "Ejector Fan" as "Allow" in the menu. Otherwise, the ejector modules cannot be used normally.

• A.False
• B.True

When the integrated UPS is wired, if the input phase sequence is wrong, the machine will not work.

• A.False
• B.True

What is the correct statement about the description of UPS5000-E? (Multiple choice)

• A.The main input frequency range is 40-70HZ
• B.The main input voltage range is 138V-485V
• C.Modular design
• D.Support for the maximum number of parallel units is 2

The Netcol 5000-A35kW uses an electronic expansion valve.

• A.False
• B.True