GREE                                                                                          GMV5 INDOOR UNIT SERVICE MANUAL   
 
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Historical fault query ingress of the current 
IDU 
Preferential operation query 
Temperature query for environment temperature sensor of the current IDU 
Prompt time query for air filter cleaning 
Static pressure setting query of ODU 
Indoor unit quantity query in one-to-many control mode 
Temperature query for outdoor environment temperature sensor 
Inlet-tube temperature query of IDU 
Outlet temperature query of IDU 
Opening degrees query of electronic expansion valve of IDU 
Capacity configuration ratio upper-limit query of outdoor and IDUs 
Highest capacity output limitation query 
Historical fault query ingress of ODU 
Unit cooling/heating function 
5.4.3 Parameter Settings 
For parameter settings, users can set user parameters and engineering parameters of the unit. The 
parameter setting method is as follows: 
(1)  After entering parameter query, switch the query code to “C00”. Press and hold “
“ for 
five seconds to enter the parameter setting status. The setting text is displayed and “P00” blinks 
in the temperature area. 
(2)  Press “ ” to switch the setting code and select a unit parameter to be set (see Table 2.6 
for parameters that can be set). 
(3)  Press “
” to enter parameter settings. The current parameter value blinks in the timer area.