H
2 Replacement of service P.C. board
1. Replace the P.C. board with a service P.C. board.
In this time, setting of jumper line (cut) or setting of DIP switch on the former P.C. board should be reflected
on the service P.C. board.
Refer to the following table about DIP switch setting and drawing of P.C. board parts layout.
2. According to the system configuration, turn on power of the indoor unit with any method in the following items.
1) In case of single (individual) operation. Turn on power supply.
A) Wait for completion of automatic address setup mode (Required time: Approx. 5 minutes) and then
proceed to
H
3
. (Refrigerant line address = 1, Indoor unit address = 1, Group address = 0
(Individual) are automatically set.)
B) Push
SET
,
CL
and
TEST
buttons of the remote controller at the same time for 4 seconds or more
(
1
operation), Interrupt the automatic address setup mode, and then proceed to
H
3
.
2) In case of group operation. Turn on power of the indoor unit of which P.C. board has been replaced with
the service P.C. board with any method in the following items.
A) Turn on power of the replaced indoor unit only.
(However, the remote controller is also connected. Otherwise
H
3
operation cannot be performed.)
Same as A) and B) in item 1).
B) Turn on power of the multiple indoor units including replaced indoor unit.
• Only a set of twin combination system
• For all units in the group
Wait for completion of automatic address setup mode (Required time: Approx. 5 minutes) and then
proceed to
H
3
.
∗
The header indoor unit of a group may change by setup of automatic address.
The refrigerant line address/indoor unit address of the replaced indoor unit are automatically set to the
vacant addresses except addresses belonging to other indoor units which have not been replaced.
It is recommended to make a note that the refrigerant line which includes the corresponding indoor unit
and that the corresponding indoor unit is master or sub in the group control.
FILE NO. SVM-
12042
–
61
–
