Instruction To Operation - Gree FGR20/BNa-M Service Manual

Duct Type Split Air Conditioner
Service Manual
2). Pull out 4-core twisted pair line in mounting hole and then make it through the rectangle hole at the back
of controller's soleplate.
3). Joint the controller's soleplate on wall face and then fix it in mounting hole with screws M4X25.
4). Insert the 4-core twisted pair line through rectangle hole into controller's slot and buckle the front panel
and soleplate of controller together.
5). At last, fix the controller's front panel and soleplate with screws ST2.2X6.5.
Caution:
During connection of wirings, pay special attention to the following items to avoid interference of
electromagnetism to unit and even failure of it.
a. To ensure normal communication of the unit, signal line and wiring (communication) of wired controller
should be separate from power cord and indoor/outdoor connection lines. The distance between them should
be kept 20cm in min.
b. If the unit is installed at the place where there is interference of electromagnetism, signal line and wiring
(communication) of wired controller must be shielded by twisted pair lines.
3.3.2 Project Debugging
Enquiry of wired controller's address: Press Function and Mode buttons at the same time for 5s under off
state of the unit, and then LCD displays wired controller's address number.
Setting of wired controller's address: Press Function and Mode buttons at the same time for 5s. In this
case, LCD displays address number. Then press ▲ or ▼ button to adjust address (address no.:1-16). After that,
press Enter/Cancel button to confirm.
Addresses of the wired controller are used for centralized control of wired controller. Enquiry and setting of
wired controller's address is shown as Fig.3.5 below:

3.4 Instruction to Operation

3.4.1 On/Off
Press On/Off button to turn on the unit.
Repress this button to turn off the unit.
CONTROL
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Fig.3.5: Enquiry and Setting of Wired Controller's Address