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Each system can nish automatic networking troubleshooting separately, as shown in the left troubleshooting chart.
Note:
1. For initial commissioning and troubleshooting MRV-link wireless communication units, the air conditioner units
must be powered on separately. Other IDUs without networking are forbidden to be powered on. Indoor units
and systems that have completed network commissioning must be powered o and then other units can start
networking in sequence. All the units can be powered on when all wireless network commissioning is completed.
2.MRV-link will search for IDU modules and check for communication error rate per ODU/system. The error rate
checking method is listed in the table below. 0% indicates the best communication and 20% or less assures normal
operation.
3.It will be necessary to conrm whether repeaters must be added when error rates are higher than 20%.
SW1 SW2 SW3 Function LED Display LD1~4
1 2 2
The rst two digits show the percentage of
inconsistency between the IDU and the E2
quantity. The last two digits indicates real-
time IDU quantity.
For example, 0522 indicates 22 sets of
real-time IDUs and 5% of inconsistent
communication percentage between the
IDUs and the E2 quantity.
You will need to clear each wireless module information when
troubleshooting MRV-link while multiple sets of systems were
powered on.
1. Clearing master wireless module:
Power up the outdoor unit, using the three rotary knobs on
the PCB; rotate SW1, SW2 and SW3 to position 1. Next, set
ODU PCB switch BM2-5 o, then on. This will clear the slave
and repeater wireless module information stored in the master
wireless module.
2. Clear the slave wireless module information by depressing
the button inside the pin hole located on the side of the slave
wireless module. Two green lights on the module will ash at
the same time to show the information will be cleared (takes
about 3 seconds).
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