Gree GUHD09NK3FO Service Manual page 40

No. Terminal name
1 CN1
2 X1(AC-L, AC-N)
3 X2
(2). Function instructions:
In order to achieve this function, set it through wired controller and refer to the following operation
method. It is defaulted that this function is not activated; if this function is set and door control accessories
are connected, the unit will control the ON/OFF of unit according to the card state detected by door control
detection board. When the card is not connected, the unit will turn to standby state. If the unit is with wired
controller, icon will be displayed on the wired controller.
If the unit is without wired controller, there will be no display. The unit will control the ON/OFF of unit
according to the detected information.
(3). Setting method:
Under off state of the unit, press Function and Timer buttons at the same time for 5s to go to the debugging
1). Without door control function (LCD displays 00)
2). With door control function (LCD displays 01)
Choose the second selection and then press Enter/Cancel button to save and exit setting. Now, door
control function is activated. The unit will memorize this setting status. The setting value will be memorized after
power failure. The detailed setting is as shown in the Figure below:
Figure 2-7-6 Illustration of door control port
Table 2-7-3 Door control wiring port
CN1 wiring terminal and door control interface of indoor mainboard
X1(AC-L, AC-N) wiring terminal, connected to door control input signal, rated voltage 220V.
X2 wiring terminal, connected to door control input signal
U-Match Series DC
Inverter Service Manual
Terminal instruction
37