GMV DC Inverter VRF
51
4 Debugging and Operation
NOTES!
(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) Button description: short press: press the button for 3s and then release it; hold the button
for 5s: press the button for 5-10s and then release it; hold the button for 10s: press the button
for 10s and then release it.
4.1 Preparation before Test Run
(1) Installation and debugging operation must comply with the relevant regulations of the local
country or region.
(2) Debugging must be carried out by a professional or under the guidance of a professional. Do
not debug the air conditioning unit by yourself.
(3) All scattered objects, especially metal chips, wire ends and clamps, should be removed from
the body.
(4) Check if the terminals of the electrical components in the unit are loose and the phase
sequence is correct.
(5) Before debugging, all pipeline valves of the unit are required to be open.
(6) Power cannot be supplied until all installation work is completed.
4.2 Notices for Unit Debugging
(1) 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.
Fig.4.2.1
(2) When starting up the debugging, the system automatically selects the operating mode
according to the current ambient temperature.
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