Debugging &Maintenance; Debugging Of Unit; Preparation For Debugging - Gree GMV-160WL/A-T Service Manual

DEBUGGING &MAINTENANCE

1 Debugging of Unit

Caution:
1. After the initial installation is finished and the main board of outdoor unit is replaced, it must perform
debugging. Otherwise, the unit can't operate.
2. The debugging must be performed by professional person or under the the guide of professional
person.

1.1 Preparation for debugging

(1) Do not disconnect the power before the installation is finished,
(2) All wires for controller and electric wires must be connected correctly and reliably.
(3) Check the the fixing ring of the foot of compressor for transportaion is removed.
(4) Remove all sundries from the unit, such as metal chips, joint, forceps holder, and so on.
(5) Check whether the appearance and pipeline system are damaged during carry or transportation
process.
(6) Calculate the required added refrigerant-charging volume according to the length of pipe of system
and pre-charge the refrigerant. If refrigerant can't be added any more when the required
refrigerant-charging volume hasn't been reached, record to refrigerant volume which still needs to be
added and continue to add refrigerant during run test operation process. Please refer to below run test
for the refrigerant-adding stage during run test process.
(7) After adding refrigerant, please make sure the valve for outdoor is opened completely.
(8) For the convenient of troubleshooting, the unit can't be connected to the PC which installed with
related debugging software and make sure that the the datas in real time of this unit can be inspected by
this computer. Please refer to Service Manual for the installation and connection of the bebugging
software.
(9) Before turn test, please do make sure that the preheat time for compressor is 8h above and touch
the compressor to see whether preheat is normal. You can perform run test only after normal preheat.
Otherwise, it may damage the compressor.
1.2 Debugging of unit
Debugging procedure for test run, display instruction for indicator on main board of outdoor unit and
operation method are as below:
Debugging
——
code
LED1
Process
Code
db
01_ Main
control unit
db
setting
db
02_ Address
distribution
db
db
DC Inverter Multi VRF System II Service Manual
Stage process instruction for debugging
Process code
LED2
Display Display
Code
status status
ON 01 ON
ON 01 ON
ON 02 ON
ON 02 ON
ON 02 ON
Status code
LED3
Display
Code
status
AO ON
OC ON
Ad Flash
L7 Flash
OC ON
61
Code instruction and operation
method
No debugging status for system
Press SW7 button on main
board for 5s to start system
debugging. The indicator on
main board is displayed as
shown in the left. 2s later, it will
enter into next step
determination.
Address distribution for the
system. 10s later, the display is
as below:
No main indoor unit. Display will
be kept for 1min. Within 1min,
set the main indoor unit through
debugging software. If notset the
main indoor unit by hand within
1min, the system will
automatically set the minimum
IP address as the main indoor
unit.
The distribution for the system