– 101 –
FILE NO. SVM-
16041
[1] Setting data read out from EEPROM
The setting data modified on the site, other than factory-set value, stored in the EEPROM shall be read out.
Step 1 Push
SET
,
CL
and
TEST
buttons on the remote controller simultaneously for more than 4 seconds.
∗
When the group operation control is performed, the unit No. displayed for the first time is the header unit
No. At this time, the CODE No. (DN) shows “
��
” . Also, the fan of the indoor unit selected starts its
operation and the swing operation also starts if it has the louvers.
Step 2 Every time when the
UNIT LOUVER
button is pushed, the indoor unit No. under the group control is displayed in
order. Specify the indoor unit No. to be replaced.
1. Change the CODE No. (DN) from
��
to
��
by pushing
/
buttons for the temperature
setting. (This is the setting for the filter sign lighting time.)
At this time, be sure to write down the setting data displayed.
2. Change the CODE No. (DN) by pushing
/
buttons for the temperature setting.
Similarly, be sure to write down the setting data displayed.
3. Repeat the step 2-2 to set the other settings in the same way and write down the setting data as shown
in the table 1 (example) on page 104.
• The CODE No. (DN) are ranged from “
��
” to “
��
”. The CODE No. (DN) may skip.
Step 3 After writing down all setting data, push
TEST
button to return to the normal stop status.
(It takes approx. 1 min until the remote controller operation is available again.)
CODE No. required at least
1. The CODE No. for the Indoor unit type and Indoor unit capacity
are required to set the rotation number setting of the fan.
2. If the system/indoor/group addresses are different from those
before replacement, the auto-address setting mode starts and the
manual resetting may be required again.
(When the multiple units group operation including twin system)
[2] P.C. Board for indoor unit servicing replacement procedures
Step 1 Replace the P.C. board for indoor unit servicing.
At this time, perform the same setting of the jumper wire (J01) setting (cut), switch SW501 (short-circuit)
connector CN34 as the setting of the P.C. board before replacement.
Step 2 It is necessary to set indoor unit to be exchanged: Remote controller = 1 : 1
Based upon the system configuration, turn on power of the indoor unit with one of the following items.
1) Single (Individual) operation. Turn on power of the indoor units and proceed to
[3].
2) Group operation
A) In case that power of the exchanged indoor unit only can be turned on
Turn on power of the exchanger indoor unit only and proceed to
[3].
B) In case that power of the indoor units cannot be turned on individually
(Case 1)
a) Remove temporarily the group wire connected to the terminal blocks A and B of the exchanged
indoor unit.
b) After connecting the remote controller wire only to the removed terminal block, turn on power of
the indoor units and proceed to
[3].
∗
When the above methods cannot be used, follow to the two cases below.
C) In case that power of the indoor units cannot be turned in individually
(Case 2)
a) Remove all CN41 connectors of the indoor units in the same group except those of the ex-
changed indoor unit.
b) Turn on power of the indoor units and proceed to
[3].
∗
After
[3] operation has finished, be sure to return the temporarily removed group wire or CN41
connector to the original connection.
Indoor unit
P.C. board
Service P.C. board of
the unit to be changed
Remote
controller
Group wire
(Case 1)
Remove the group wire
of the terminal blocks
A and B of the changed
indoor unit and then install
the remote controller only.
Remove CN41 connectors of the
indoor units other than the units
to be changed in the same group.
A B
Indoor unit
Indoor unit
A B
Remote
controller
A B
Indoor unit
P.C. board
Service P.C. board of
the unit to be changed
Group wire
(Case 2)
CN41
A B
A B
DN
10
11
12
13
14
Contents
Type
Indoor unit capacity
System address
Indoor unit address
Group address
