GREE GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
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"SW4" to quit the query status.
If no button operations are performed on the master unit for five minutes, the function setting
automatically quits and the unit restores the current status.
Step 4: In query status, press "SW4" to quit.
2.2.5 Basic Operations for Engineering Commissioning
2.2.5.1 Basic Operations
Basic Operations
Operation Method
Remark
Starting engineering
commissioning
Press and hold "SW7" on the master unit
for more than five seconds.
——
Selecting
no-wired-controller
commissioning mode
Press "SW4" and "SW5" simultaneously
in any commissioning progress after the
unit enters the commissioning status.
In this mode, the system does not detect the
communication status between the IDU and
wired controller any more. Commissioning
can be performed on the IDU without
configuring the wired controller.
Quitting engineering
commissioning
In engineering commissioning status,
press and hold "SW7" for more than five
seconds on the master unit to quit
commissioning.
——
Pausing engineering
commissioning
In engineering commissioning status,
press "SW6" on the master unit to retain
the previous commissioning completion
phase of the current commissioning
phase.
This function is valid after step 9. For
example, if receiving a pausing engineering
commissioning signal during the process of
"10. Pre-startup ODU valve status judging
phase" in step 11, the system will restore
the completion phase of "9. Pre-startup
refrigerant judging phase" in step 10.
Continuing
engineering
commissioning
In engineering commissioning pause
status, press "SW6" on the master unit to
continue engineering commissioning.
——
2.2.5.2 Restoring Factory Settings
Restoring
Factory Settings
Setting Method
Prompt for
Successful Settings
Remark
Restoring
setting 1
Press and hold "SW8"
on the master unit for
more than 10 seconds.
All LEDs blink for
three seconds.
All factory settings of the ODU are restored
and the unit waits for re-commissioning.
Restoring
setting 2
Press and hold "SW3"
and "SW8" on the
master unit for more
than 10 seconds.
All LEDs blink for
five seconds.
Re-commissioning is not required. The
number of outdoor and IDUs is memorized.
Addresses of outdoor and IDUs are all
cleared. All the other function settings are
cleared.
Restoring
setting 3
Press and hold "SW5"
and "SW8" on the
master unit for more
than 10 seconds.
All LEDs blink for
seven seconds.
Re-commissioning is not required. The
number of outdoor and IDUs is memorized.
Addresses of outdoor and IDUs retain the
preceding settings. All the other function
settings are cleared.
3 Commissioning Process
Note:
①
It is forbidden to directly connect the compressor with power supply and forcibly power it on
during commissioning and maintenance.
②
Engineering commissioning operations must be performed on the GMV5E serial unit. Otherwise,
