328 014525201
17
Specifications subject to change without notice.
TROUBLESHOOTING (CON’T)
This unit has on
−
board diagnostics. Error codes are displayed on the wired remote controller and the outdoor unit microprocessor board with colored
LED lights. Table 12 explains the error codes on both.
Table 12—Malfunction Status Table Outdoor Multi
−
zone Sizes 48
−
56
ERRORS OF DEFINITION
MAIN CONTROL DISPLAY FOR OUTDOOR UNIT
INDOOR UNIT
CODE
TESTING
BOARD
CODE
YELLOW LED
RED LED
GREEN LED
Indoor unit 3 is connected
Flash 7 times
Indoor unit 4 is connected
Flash 8 times
Indoor unit 5 is connected
Flash 9 times
Indoor unit 6 is connected
Flash 10 times
Indoor unit 7 is connected
Flash 11 times
Indoor unit 8 is connected
Flash 12 times
Indoor unit 9 is connected
Flash 13 times
Indoor anti-freeze protection
E2
E2
Inside temperature sensor error
F1
F1
Evaporator midway temp sensor error
F2
F2
Liquid pipe of Branch Boxes module temperature sensor
error
b5
b5
Gas pipe of Branch Boxes module temperature sensor
error
b7
b7
Mode conflicts
E7
E7
Communication error
Branch Box 1
Indoor unit A
Indoor unit B
Indoor unit C
Branch Box 2
Indoor unit A
Indoor unit B
Indoor unit C
Branch Box 3
Indoor unit A
Indoor unit B
Indoor unit C
Communication error between the main board and driving
board
P6
Communication error between the main board and testing
board
CE
Indoor unit gas sensor error
Fn
Indoor unit humidity sensor error
L1
Indoor unit water full protection
E9
Jumper terminal error
C5
C5
Power supply phase lack
dJ
Outdoor unit fan motor error
L3
Refrigerant recovery mode
Fo
Fo
BRANCH BOXES
Table 13—Branch Box
ERRORS
INDICATING LED FLASHING TIMES
INDOOR UNIT
ERROR CODE
OUTDOOR UNIT ERROR
CODE
YELLOW LED
GREEN LED
RED LED
Branch Box
1 is connected
Flash 1 time
Branch Box
2 is connected
Flash 2 times
Branch Box
3 is connected
Flash 3 times
Indoor unit A is connected
Flash 1 time
Indoor unit B is connected
Flash 2 times
Indoor unit C is connected
Flash 3 times
Indoor unit A gas tube temperature sensor error
Flash 1 time
b7
b7+ indoor unit address
Indoor unit A liquid tube temperature sensor error
Flash 2 times
b5
b5+ indoor unit address
Indoor unit B gas tube temperature sensor error
Flash 3 times
b7
b7+ indoor unit address
Indoor unit B liquid tube temperature sensor error
Flash 4 times
b5
b5+ indoor unit address
Indoor unit C gas tube temperature sensor error
Flash 5 times
b7
b7+ indoor unit address
Indoor unit C liquid tube temperature sensor error
Flash 6 times
b5
b5+ indoor unit address