DC Inverter Multi
VRF Service Manual
143
3.1.2 Members of Debugging
Members of debugging include aftersales debugging personnel and installation personel, etc.
All members of debugging shall take relative professional training before debugging of the unit. Group these people
according to practical situation. Professional of debugging and assistant are essentaial for each group.
3.1.3 Preparation of Tools and Equipments
a. Check if the following tools or equipments are complete before bebugging.
Inner hexagon Spanner Digital Display Thermometer
Monkey wrench Sound meter
Phillips screwdriver Split-core type meter
Slotted screwdriver Digital multimeter
Vacuum Pump Ammeter
Electric Scale Calculagraph
Pressure Gage Standing ladder
Anemoscope
Gree portable debugger (CE40-24/E), or
debugging software and data wire
b. Check if the software is correct before debugging.
Debugging of Gree VRF units applies exclusive debugging software or portable debugger which are provided by
Gree, or the units can’t be effectively debugged.
c. Check if all required les and recorded data are complete.
3�2 Inspection before Debugging
3.2.1 Inspection of Installation Environment
Inspection of installation environment includes: heat exchange environment of the unit, electromagnetic radiation
components, etc, which shall be in accordance with related national electric standards. If there is any thing which can’t
conform to installation standards, make record in time for analysis during debugging.
3.2.2 Appearance Inspection
Inspect appearance to check if the installation of pipeline conforms to standards, if jnsulation work of discharge
pipe is good and if communication wire can meet requirements of installation standards.
The refrigerants pipeline shall be installed vertically and the inclination degree of branch pipe shall be within the
specied range. If there is any thing which can’t conform to installation standards, make record in time for analysis during
debugging.
Refrigerants pipeline and condensate discharge pipe can’t be directly exposed. Repair it if there is any pipe exposed
or serious loss will be caused.
Pipe is not completely coverd
Insulating material of copper pipe is broken
Incorrect insulation work
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