Haier MRV 5 Series Troubleshooting Manual page 17

Panel of Round way
Running lamp flash
cassette indication
time(LED4)
23
Check if all the indoor
unit is error
PCB display in duct unit
Running light(LED3)
3 5
14
the outdoor
unit is error
Outdoor unit
Small service PCB
LED1,LED2.......
(light or not)