Gree GMVVQ1015WM/C-X, Service Manual

Page: 25 / 433

Gree GMV6 HR DC Inverter VRF Units Service Manual
23
3.2.2 Commissioning operation of refrigerant system
3.2.2.1 Precautions
(1) Do set one (only one) module as the main module during debugging.
(2) When there is no special requirement, the other functions do not need to be set, and it can be
operated according to the factory settings. For special functions, please refer to the related technical
documents.
(3) Installation and debugging operation must comply with the relevant regulations of the local country
or region.
(4) Debugging must be carried out by a professional or under the guidance of a professional. Do not
debug the air conditioning unit by yourself.
(5) All scattered objects, especially metal chips, wire ends and clamps, should be removed from the
body.
(6) Check if the terminals of the electrical components in the unit are loose and the phase sequence is
correct.
(7) Before debugging, all pipeline valves of the unit are required to be open.
(8) Power cannot be supplied until all installation work is completed.
(9) Before conducting the debugging, please ensure that the compressor has been preheated for more
than 2 hours, and check whether the preheating is normal by hand. Debugging can be started up
only when the preheating is normal, otherwise the compressor may be damaged.
(10) When starting up the debugging, the system automatically selects the operating mode according to
the current ambient temperature.
(11) When debugging, the front panel of the outdoor unit must be completely closed, otherwise it will
affect the accuracy of debugging (as shown in the figure as below).