– 55 –
[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.
Press
█ and ▼ button on the remote control simultaneously for more than 10 seconds.
* In the air-conditioning group control mode, and the indoor unit No.1-N are displayed first.
1 is the piping system address (the value of the refrigerant piping system is the same as the number
of outdoor units, and one outdoor unit is displayed as 1).The indoor unit address represented by N
Step 1
is the main indoor unit address.
* In the non-group control mode (only one indoor unit), only 1-1 is displayed on the left.
Push
▼ or ▲ button to adjust the indoor unit number. The indoor unit number in the group control will
be changed cyclically. Select an indoor unit to change the settings and push button to confirm.
1. Change the CODE No. (DN) to by pressing ▼ / ▲ 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 pressing
▼ / ▲ 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
in as shown the table 1 (example) on page 4.
The CODE No. (DN) are ranged from to . The CODE No. (DN) may skip.
Step 2
Step 3
After writing down all setting data, press button to return to the normal stop status.
(It takes approx. 1 min until the remote control operation is available again.)
CODE No.required at least
DN
Contents
10
Type
11
Indoor unit capacity
12
System address
13
Indoor unit address
14
Group address
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.
5d
High ceiling SW
E0
The country designed for
Connector (CN504)
for drain pump
J08
J01
J09
CN34
(Red)
(White)
CN504
SW501
IC503
IC501
MCC-1643
C08
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
Turn on power of the exchanged indoor unit only and proceed to [3].
indoor unit.
A) In case that power of the exchanged indoor unit only can be turned on.
B) In case that power of the indoor units cannot be turned on individually.
a) Remove temporarily the group wire connected to the terminal blocks A and B of the exchanged
the indoor units and proceed to [3].
b) After connecting the remote controller wire only to the removed terminal block, turn on power of
indoor unit.
C) In case that power of the indoor units cannot be turned in individually.
a) Remove all CN41 connectors of the indoor units in the same group except those of the exchanged
b) Turn on power of the indoor units and proceed to [3].
(Case 1)
(Case 2)
[2] P.C. Board for indoor unit servicing replacement procedures
Step 1
Replace the P.C. board to the P.C. board for indoor unit servicing.
At this time, perform the same setting of the jumper wire (J01,J08,J09) setting (cut), switch SW501 (short-circuit),
connector CN34 as the setting of the P.C. board before replacement.
*After [3]. operation has finished, be sure to return the temporarily removed group wire or CN41 connector to the original connection.
– 101 –
The setting data modified on the site, other than factory-set value, stored in the EEPROM shall be read out.
Step 1 Push
,
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
*When the above methods cannot be used, follow to the (case 2) below.
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