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DC Inverter Multi
VRF Service Manual
3.2.3 Inspection of Refrigerating System
1) Before debugging, make sure that cut-off valve of each module is in the maximum opening angle and in the
meantime, check if there is any mark of oil on the valve. If there is, inspect the valve immediately, and if conrm that there
is any leakage, stop the debugging immediately which can be resumed again after the problem of leak has been solved.
If the cut-valve of
outdoor unit has
been in the maximum
opening angle
Oil stain
If there is any leak?
Note: if there is only one outdoor module, the oil balance valve can’t be opened, and cut-off valve of gas pipe
and cut-off valve of liquid gas pipe need to be opened.
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