Installation Of Wired Controller; Removal Of Wired Controller; Troubleshooting - Gree GUHD09NK3FO Service Manual

U-Match Series DC
Inverter Service Manual
communication wire of wired controller must use shielding twisted wire.

5.3 Installation of Wired Controller

Firstly, the selection and connection way of wired controller's signal wire are as below:
(1). Choose suitable signal wire: 2-core signal wire (wire diameter >=0.75mm, wire length<30m and the
recommended length is 8m).
(2).
wired controller of indoor unit with screws; make sure the signal wire is solid.
Then, the detailed installation procedures of wired controller are as shown in Figure 2-5-2:
Brief instructions of installation procedure:
1). Pull out the 2-core signal wire in the installation hole of the wall and then let this wire go through the
hole at the back of wired controller's base plate.
2). Fix the base plate and installation hole of the wall together with screw M4×25.
3). Fix the above mentioned 2-core signal wire on the copper insert X1 and X2 with the equipped screws
of wired controller.
4). Fasten the wired controller's panel with its base plate together.

5.4 Removal of Wired Controller

6 TROUBLESHOOTING

6.1 Display of Error Code
Error Code
E1
E2
E3
E4
E6
E8
E9
F0
F1
32
Figure 2-5-2 Installation of wired controller
Figure 2-5-3 Removal of wired controller
Table 2-6-1 Error Code List
Compressor high pressure protection
Compressor low pressure protection, refrigerant lacking protection, refrigerant recycling mode
Compressor high discharge temperature protection
Malfunction of indoor fan motor
Malfunction of indoor ambient temperature sensor
Malfunction of evaporator temperature sensor
Error
Freeze protection
Communication malfunction
Full water protection