GREE Multi Variable Air Conditioners Indoor Unit
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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
4.4.3 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
(3) parameters that can be set.
(4) Press " " to enter parameter settings. The current parameter value blinks in the timer
area. Press " " to change the parameter value.
(5) Press " " to confirm query and return to step 2.
(6) After entering engineering commissioning, 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 2.6 Setting Parameters
00: not changing the current settings
01: setting the corresponding IDU to master IDU
001-255: setting the IDU corresponding to *** to master IDU
Power-down memory mode
settings
00: standby after power-down recovery
01: restoring the original status after power-down recovery
Historical fault clearing
00: not cleared
01: cleared
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