Gree FGR20/BNa-M Service Manual page 39

Duct Type Split Air Conditioner
Service Manual
3.6.2 Checking of Outdoor Ambient Temperature
The outdoor ambient temperature can be checked on the wire controller for the convenience of users without
going out. (Refer to the section of wire controller instructions for detailed operation.)
3.6.3 Fresh Air Control ＊
11-level control can be realized for the amount of fresh air taken in. The function not only facilitates the
health of users, but also controls the electricity consumption loss due to taking fresh air in. This kind of control can
be carried out through the wired controller. The function can be set and go into effect at any time, and features
very simple operation. (Refer to the section of wired controller instructions for detailed operation.)
3.6.4 Position and Method of Installing Wired Remote Controller
One end of the control wire of the wired remote controller is connected to main board in the electric box of
indoor unit, it should be tightened by wire clamps, while the other end should be connected to the wired controller.
The special control wire be used between the indoor unit and wired remote controller, of which the length is 8
meters.
The material to be adopted for the control wire should be metallic substance. The wired controller could
not be disassembled and the control wire to be used for the wired controller should not be changed by users
CONTROL
36
Fig3.20
Fig3.21
Fig 3.22