GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL
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1.3.4 Function Query Operations
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 to enter the query status.
Step 4: Select a function to be queried by pressing "SW1 (UP)" or "SW2 (DOWN)" on the master
unit. By default, the A7 outdoor silent mode is displayed for query.
For example, select the A6 unit cooling/heating function. The display is as follows:
Press "SW7" and select the IDU project number query on the master unit. The master unit is
displayed as follows. Other modules are displayed in normal status.
Regardless of the current display status of wired controllers or display panels of all IDUs, the current
display status is all switched to the IDU project number. However, it does not influence the settings and
operation status of outdoor and IDUs.
On the master unit, press "SW6" to return to the upper level. The IDU retains the project number
display status.
On the master unit, press and hold "SW6" to quit the address display status for all IDUs and return
to the upper level.
If no quit button operations are performed on the master unit for 30 minutes, the function setting
automatically quits and the unit restores the current status.
Step 6: If the n8 IDU address query is selected, the display is as follows:
Number of IDUs (Thousands-place
Hundreds-place)
Number of IDUs
(Tens-place Ones-place)
The digital LED2 displays the number of IDUs (thousands-place hundreds-place) and the digital
LED3 displays the number of IDUs (tens-place ones place). For example, if the number of IDUs is 75,
"0075" is displayed.
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.
Note: The online IDU quantity query function applies to a single refrigerating system only.
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