Haier MRV5-H - 11. Appendix; 11.1 Wiring Diagrams and PCB Photo

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10.7 MRV-Link Troubleshooting
ODU searching for IDU Set
DIP Switch BM1-2 OFF
Set BM2-4 on
SW1 SW2 SW3
0 3 2
The units number in
LED display tube
=real units number?
BM1-2 ON,Search ending
SW1 SW2 SW3
1 2 2
Waiting for 10 min and
checking LED display tube
SMG1:Checking error rate%
Error rate ≤10
Normal communication
and ending networking
Conrm IDU status
and adding repeater
as manual required
Yes
No
Waiting
Yes
No