Check Items After Installation And Trial Run; Check Items After Installation; Trial Run - GREE ELECTRIC GMV-V72W/A-F(U) Owner's Manual

5 Check Items after Installation and Trial Run

5.1 Check Items after Installation

Check items
Each part of the unit is installed securely?
Gas leakage test is taken or not?
Unit gets proper thermal insulation or not?
Drainage is smooth or not?
Is the voltage in accordance with the rated voltage
specified on the nameplate?
Is the electric wiring and pipe connection installed
correctly?
Unit is securely grounded or not?
Power cord meets the required specification?
Is the air inlet/outlet blocked?
Length of refrigerant pipe and the charging amount
of refrigerant are recorded or not?
Is the address code of outdoor modules and the
code of module quantity correct?
Is the address code of indoor units and wired
controller correct?
Has the communication line been connected
correctly?
Is the piping connection and valve status correct?
Is the phase sequence of external power cord
correct?

5.2 Trial Run

Note: during debugging, one and only one module must be set as a master module.
During debugging, one and only one IDU must be set as a master IDU.
When no special requirement is needed, no need to set other functions. Unit can operate according
to ex-factory settings. When special requirement is needed, please read the Technical Service Manual or
Debugging and Maintenance Manual.
5.2.1 Preparation before trial run
(1) The power supply should be turned on only after finishing all the installation.
(2) All the control wires and cables are connected correctly and safely. Completely open the gas and
liquid valves.
(3) All the objects like metal filling, thrum and clip should be cleared after installation.
(4) Check if the unit appearance and piping system are damaged or not due to transportation.
(5) Check if the terminals of electrical element are loose and the phase sequence is correct or not.
(6) Check the valve: fully open the gas and liquid valve.
5.2.2 Trial run
5.2.2.1 Notices
Possible conditions due to improper installation
Unit may drop, shake or emit noise
Insufficient cooling (heating) capacity
There may be condensation and dripping.
There may be condensation and dripping.
Unit may have malfunction or components may get
damaged.
Unit may have malfunction or components may get
damaged.
Electrical leakage
Unit may have malfunction or components may get
damaged.
Insufficient cooling (heating) capacity
The refrigerant charging amount is not accurate.
The unit cannot run normally. Communication
malfunction might happen.
The unit cannot run normally. Communication
malfunction might happen.
The unit cannot run normally. Communication
malfunction might happen.
The unit cannot run normally. The unit might be
damaged.
The unit cannot run normally. Phase sequence error
may happen.
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Ultra Heat GMV Multi VRF
Check