102
15. Servicing
Mode
15.1 Auto OFF/ON Button
1
AUTO OPERATION MODE
The Auto operation will be activated immediately once the Auto OFF/ON button is pressed. This operation
can be used to operate air conditioner with limited function if remote control is misplaced or malfunction.
2
TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE)
The Test Run operation will be activated if the Auto OFF/ON button is pressed continuously for more than 5
seconds. A “beep” sound will heard at the fifth seconds, in order to identify the starting of Test Run operation
(Forced cooling operation). Within 5 minutes after Forced cooling operation start, the Auto OFF/ON button is
pressed for more than 5 seconds. A 2 “beep” sounds will heard at the fifth seconds, in order to identify the
starting of Forced heating operation.
The Auto OFF/ON button may be used together with remote control to set / change the advance setting of air
conditioner operation.
3
REMOTE CONTROL NUMBER SWITCH MODE
The Remote Control Number Switch Mode will be activated if the Auto OFF/ON button is pressed
continuously for more than 11 seconds (3 “beep” sounds will occur at 11th seconds to identify the Remote
Control Number Switch Mode is in standby condition) and press “AC RESET” button and then press any
button at remote control to transmit and store the desired transmission code to the EEPROM.
There are 4 types of remote control transmission code could be selected and stored in EEPROM of indoor
unit. The indoor unit will only operate when received signal with same transmission code from remote control.
This could prevent signal interference when there are 2 or more indoor units installed nearby together.
To change remote control transmission code, short or open jumpers at the remote control printed circuit
board.
Remote Control Printed Circuit Board
Jumper A (J-A)
Jumper B (J-B)
Remote Control No.
Short Open A
(Default)
Open Open
B
Short Short
C
Open Short
D
During Remote Control Number Switch Mode, press any button at remote control to transmit and store
the transmission code to the EEPROM.
Summary of Contents for CS-E12NKR
Page 30: ...30 4 Location of Controls and Components 4 1 Indoor Unit 4 2 Outdoor Unit 4 3 Remote Control ...
Page 31: ...31 5 Dimensions 5 1 Indoor Unit 5 1 1 CS E7NKR CS E9NKR CS E12NKR CS E15NKR ...
Page 32: ...32 5 1 2 CS E18NKR CS E21NKR CS E24NKR CS E28NKR ...
Page 34: ...34 5 2 3 CU E28NKR ...
Page 35: ...35 6 Refrigeration Cycle Diagram 6 1 CU E7NKR ...
Page 36: ...36 6 2 CU E9NKR CU E12NKR ...
Page 37: ...37 6 3 CU E15NKR CU E18NKR ...
Page 38: ...38 6 4 CU E21NKR ...
Page 39: ...39 6 5 CU E24NKR CU E28NKR ...
Page 40: ...40 7 Block Diagram 7 1 CU E7NKR CU E9NKR CU E12NKR ...
Page 41: ...41 7 2 CU E15NKR CU E18NKR CU E21NKR ...
Page 42: ...42 7 3 CU E24NKR ...
Page 43: ...43 7 4 CU E28NKR ...
Page 44: ...44 8 Wiring Connection Diagram 8 1 Indoor Unit ...
Page 45: ...45 8 2 Outdoor Unit 8 2 1 CU E7NKR CU E9NKR CU E12NKR ...
Page 46: ...46 8 2 2 CU E15NKR CU E18NKR ...
Page 47: ...47 8 2 3 CU E21NKR ...
Page 48: ...48 8 2 4 CU E24NKR ...
Page 49: ...49 8 2 5 CU E28NKR ...
Page 50: ...50 9 Electronic Circuit Diagram 9 1 Indoor Unit ...
Page 51: ...51 9 2 Outdoor Unit 9 2 1 CU E7NKR CU E9NKR CU E12NKR ...
Page 52: ...52 9 2 2 CU E15NKR CU E18NKR ...
Page 53: ...53 9 2 3 CU E21NKR ...
Page 54: ...54 9 2 4 CU E24NKR ...
Page 55: ...55 9 2 5 CU E28NKR ...
Page 58: ...58 10 1 6 Human Activity Sensor Printed Circuit Board ...
Page 59: ...59 10 2 Outdoor Unit 10 2 1 CU E7NKR CU E9NKR CU E12NKR ...
Page 60: ...60 10 2 2 CU E15NKR CU E18NKR ...
Page 61: ...61 10 2 3 CU E21NKR CU E24NKR ...
Page 62: ...62 10 2 4 CU E28NKR ...
Page 63: ...63 10 2 5 Noise Filter Printed Board CU E21NKR ...
Page 108: ...108 16 3 Error Code Table ...
Page 109: ...109 ...
Page 140: ...140 17 1 1 3 To remove discharge grille ...
Page 141: ...141 17 1 1 4 To remove control board 17 1 1 5 To remove cross flow fan and indoor fan motor ...
Page 142: ...142 ...
Page 144: ...144 17 2 1 3 To remove power electronic controller ...
Page 146: ...146 ...
Page 201: ...201 19 2 5 CU E28NKR ...
Page 202: ...202 ...