Engineering Parameter Settings - Gree GMV-ND07PLS/A-T(U) Service Manual

Multi Variable Air Conditioners Indoor Unit for North America
NOTICE!
In parameter query status, "FAN", ―TIMER‖, "SLEEP", and "SWING" are invalid. By pressing the
―ON/OFF‖ button, users can return to the main interface but not power on/off the unit.
In parameter query status, signals of the remote controller are invalid.

4.1.7 Engineering Parameter Settings

Engineering parameters can be set in power-on or power-off status.
(1) Press and hold the ―FUNCTION‖ button for five seconds. The temperature area displays ―C00‖.
Continuously press the ―MODE‖ button for three times, and then press and hold the ―FUNCTION‖ button
for five seconds to enter the engineering parameter setting interface. The temperature area displays
―P00‖.
(2) Select a parameter code by pressing ― ‖ or ― ‖. Press the ―MODE‖ button to switch to
parameter value settings. The parameter value blinks. Adjust the parameter value by pressing ― ‖ or ― ‖
and then press the ―ENTER/CANCEL‖ button to complete settings.
(3) Press the ―ENTER/CANCEL‖ button to return to the upper-level menu till quitting parameter
settings.
In the engineering parameter setting interface, users can also set user parameters listed in Table
4.4.
The engineering parameter setting list is as follows:
Parameter
Parameter Name
Code
Power-down
P15
memory mode
Historical
P17
clearing for IDU
Environment
temperature
P20
sensor settings for
IDU
Corrected value of
environment
temperature
P21 sensor of IDU (for
cooling,
dehumidifying,
and air supply)
Table 4.4 Engineering Parameter Setting List
Parameter Range
00: standby after
power-down recovery
01: restoring the original
status after power-down
recovery
fault 00: not cleared
01: cleared
01: temperature sensor
of air return vent
02: temperature sensor
of wired controller
03: temperature sensor
of air return vent for
cooling, dehumidifying,
and air supply;
temperature sensor of
wired controller for
heating
04: temperature sensor
of wired controller for
cooling, dehumidifying,
and air supply;
temperature sensor of
air return vent for
heating
-15 to +15
Default Value
00
00
03
Temperature
sensor of unit:
0° C;
temperature
sensor of
wired
controller: 0° C
54
Remark
Historical faults of all IDUs
controlled by the current wired
controller are cleared.
When there are master and slave
wired controllers and the
temperature sensor of wired
controller is used, only the
temperature sensor of the master
wired controller is used by default.
NOTICE!
1. In automatic mode, the
environment temperature sensor
settings are invalid for a common
IDU but the setting value is
memorized.
2. The environment temperature
sensor settings are invalid for a
fresh-air IDU. The temperature
sensor of air return vent is used by
default.
Press ― ‖ or ― ‖ to add or reduce
by 1° C.