Master Idu Settings; Parameter Query - Gree GMV-ND07PLS/A-T(U) Service Manual

Multi Variable Air Conditioners Indoor Unit for North America

4.4.1 Master IDU Settings

The master IDU can be set through the wired controller or remote controller. The methods for setting
the master IDU through the remote controller are as follows:
Step 1: Set an IDU to air-supply status and set the temperature to 30° C.
Step 2: Continuously press ―—‖ and ―+‖ for three times within five seconds.
Step 3: Check whether the setting is successful. If it is, the LED panel of the IDU will display "UC" for
five seconds and "MASTER" on the wired controller will be on. Otherwise, repeat steps 1 and 2.

4.4.2 Parameter Query

Engineering application functions cover parameter query and parameter settings.
For parameter query, users can query user parameters and engineering parameters of the unit. The
parameter query method is as follows:
(1) On the professional remote controller of YV1L1, press and hold "
enter the parameter query status. The viewing text is displayed. The query code "C00" blinks in the
temperature area.
(2) Press " " to switch the query code and select a unit parameter to be queried (see Table 2.5
for parameters that can be queried).
(3) If the timer area displays query sub-items, it indicates that there are level 2 query menus. Press
" " to enter level 2 query menu selection. The content blinks in the timer area. Press "
MODE
switch query sub-items and select a level 2 menu to be queried.
(4) Press "
TEMP
After entering the engineering application function, the system automatically quits the engineering
commissioning status if no valid operations are performed within 20 seconds. To directly quit the
engineering commissioning status, press "
Query Code
C00 Invalid
C01 Project number query of the current IDU
C02 Capacity query of the current IDU
C03 Indoor unit quantity query in the CAN1 network
C04 Project number query of the master IDU
Historical fault query ingress of the current
C05
IDU
C06 Preferential operation query
C07 Temperature query for environment temperature sensor of the current IDU
C08 Prompt time query for air filter cleaning
C10 Static pressure setting query of ODU
" to confirm query and return to step 2.
CLOCK
Table 2.5 Query Parameters
Query Content
".
Query Sub-item
01
02
03
04
05
01
02
03
64
" for five seconds to
CLOCK
Level 2 Query Content
Fault 1
Fault 2
Fault 3
Fault 4
Fault 5
Module 1
Module 2
Module 3
" to