Basic Operations For Engineering Commissioning - Gree Ultra Heat GMV Multi VRF Heat Pump Series Service Manual

Ultra Heat GMV VRF Technical Service Manual
PM
PH
N1 Online ODU quantity
N9
NOTE: On the master unit, press "SW5" to return to the upper level if there are two levels of menu.
And press "SW5" long to cancel the setting function status.
If no button operations are performed on the master unit for one minute, the function setting
automatically quits and the unit do not restore the current status.

3.4 Basic Operations for Engineering Commissioning

3.4.1 Basic operations
Basic Operations
Starting engineering Press and hold "SW4" on the master unit for more
commissioning than six seconds.
In engineering commissioning status, press and
Quitting engineering
hold "SW5" for more than six seconds on the
commissioning
master unit to quit commissioning.
After the step 5 of engineering commissioning
Pause-continue
status, press "SW5" on the master unit to return to
engineering
the previous commissioning phase of the current
commissioning
commissioning phase, and follow steps.
3.4.2 Restoring factory settings
Restoring Factory Settings
Restoring setting 1 (A1)
Restoring setting 2 (A2)
Step 1: Open the commissioning window of the master unit panel.
Step 2: Power on the entire unit.
Step 3: Press "SW4" on the master unit at least 6 seconds to enter the to-be-selected status of
function settings. By default, the master unit is displayed as follows:
LED1
Function Code Display Mode
A0
Press "SW1" on the master unit to select corresponding functions, including:
LED1
Function Code Display Mode
A0
A1
A2
Step 4: after selecting the functions to be set, press "SW4" to confirm entering function settings. The
master unit is displayed as follows:
Middle pressure
High pressure
Online IDU quantity
Operation Method
All factory settings of the ODU are restored and the unit waits for re-commissioning.
Re-commissioning is not required. The number of outdoor and IDUs is memorized.
Addresses of IDUs are all cleared.
Confirmation
Blinking
Confirmation
Blinking
Blinking
Blinking
0.01MPa
If LED2 shows 2 and LED3 shows 80, it means high
0.01MPa
pressure is 2.80MPa.
/
/
Remark
LED2
Display Mode
/ /
LED2
Display Mode
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/ /
/ /
81
COMMISSIONING OPERATION
Remark
——
——
This function is valid after step 5. For
example, if receiving a pause-continue
engineering commissioning signal during
the process of step 7, the system will
restore the completion phase of step 6.
LED3
Current Data
/
LED3
Current Data
/
/
/
Display Mode
/
Display Mode
/
/
/