How To Check Miswiring For Multi Branch Selector Unit - Daikin VRV EMERION REYQ-AATJA Service Manual

Field Settings for Branch Selector Unit
3.4

How to Check Miswiring for Multi Branch Selector Unit

When miswiring of the transmission wire between the Branch Selector unit and the indoor unit is suspected
It is possible to check the miswiring by operating the DIP switches to turn ON the corresponding
indoor fans to see which wires are miswired according to the procedure below.
Caution
All the DIP switches must be restored to their original position after the check. Do not touch any
switches other than those indicated.
In case of BS12Q54TVJ
1. Turn OFF the power of the Branch Selector unit.
2. Turn OFF all the DIP switches of DS1 on the PCBs.
3. Turn ON all the DS2-3.
System (piping)
A B C D E F G H I J K L
A1P A2P
DS1
ON
OFF OFF
OFF
4. Turn ON the power of the Branch Selector unit.
5. Turn ON the DIP switch of DS1 corresponding to the system to be checked.
DS1 (A1P)
ON
OFF
For system A
For system B
For system C
For system D
6. If the relevant indoor fan is on, it is OK. If another indoor fan is on, correct the wiring.
7. After the check is completed, turn OFF the power of the Branch Selector unit.
8. Turn OFF all the DS2-3.
9. If there is a branch port to which no indoor unit is connected, or if the branch ports are to be
10. Turn ON the power of the Branch Selector unit.
283
A3P
DS2
ON
ON
OFF
DS2-3 for
checking
system A-D
(For example, when checking the system C, Turn ON DS1-3 on A1P.)
For system E
For system F
For system G
For system H
joined, perform field setting referring to pages 280 and 281.
DS1 DS2
ON
OFF
OFF
DS2-3 for
checking
system E-H
DS1 (A2P)
ON
OFF
DS1
ON ON
OFF OFF
OFF
DS2-3 for
checking
system I-L
DS1 (A3P)
ON
OFF
For system I
For system J
For system K
For system L
Part 5 Field Settings and Test Operation
SiUS372201EB
DS2