Gree CM100N1480, Service Manual

Page: 89 / 266

GREE Multi Variable Air Conditioners Indoor Unit
83
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 " " for five seconds to
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
(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 " " to confirm query and return to step 2.
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 " ".
Table 2.5 Query Parameters
Query Code Query Content Query Sub-item Level 2 Query Content
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
C05
Historical fault query ingress of the current
IDU
01 Fault 1
02 Fault 2
03 Fault 3
04 Fault 4
05 Fault 5
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
01 Module 1
02 Module 2
03 Module 3
04 Module 4