Owner's Manual

BU Module
23
9 Troubleshooting
WARNIN G
1) In the event of abnormal conditions (such as an unpleasant smell), please shut off the power supply
immediately an
d then contact the appointed service center; otherwise, the abnormal running would
damage the air conditioner and also would cause electric shock or fire hazard .
2) Do not repair the air conditioning personally but instead contact the professionally skilled personnel at
the appointed service center, as the incorrect repair would cause electric shock or fire hazard etc.
Table 13
Errors
Indicating LED flashing times
Indoor
unit error
code
Outdoor unit error
code
Yellow
LED
Green
LED
Red
LED
BU 1 is connected
Flash 1 time
BU 2 is connected
Flash 2 times
BU 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 D is connected
Flash 4 times
Indoor unit E is connected
Flash 5 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
Indoor unit D gas tube
temperature sensor error
Flash 7
time
b7
b7 indoor unit
address
Indoor unit D liquid tube
temperature sensor error
Flash 8
times
b5
b5 indoor unit
address
Indoor unit E gas tube
temperature sensor error
Flash 9
time
b7
b7 indoor unit
address
Indoor unit E liquid tube
temperature sensor error
Flash 10
times
b5
b5 indoor unit
address
10 After-Sales Service
If there is any quality or other issue, please contact the after-sales service center.