Gree GMV-ND07PLS/A-T(U) Service Manual page 89

GREE
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 "
(3) 2.5 for parameters that can be queried).
(4) If the timer area displays query sub-items, it indicates that there are level 2 query menus. Press
(5) " " to enter level 2 query menu selection. The content blinks in the timer area. Press
" " to switch query sub-items and select a level 2 menu to be queried.
(6) Press "
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
C01
C02
C03
C04
Historical fault query ingress of the current
C05
C06
C07
C08
C10
" to switch the query code and select a unit parameter to be queried (see Table
" to confirm query and return to step 2.
Table 2.5 Query Parameters
Query Content
Project number query of the current IDU
Indoor unit quantity query in the CAN1 network
Project number query of the master IDU
IDU
Temperature query for environment temperature sensor of the current IDU
Prompt time query for air filter cleaning
Static pressure setting query of ODU
Multi Variable Air Conditioners Indoor Unit
".
Query Sub-item
Invalid
Capacity query of the current IDU
01
02
03
04
05
Preferential operation query
01
02
03
04
83
" for five seconds to
Level 2 Query Content
Fault 1
Fault 2
Fault 3
Fault 4
Fault 5
Module 1
Module 2
Module 3
Module 4