,
buttons on the remote control simultaneously for more than 4 seconds.
In the group control operation, the unit No. displayed for the first time is the header unit No.
At this time, the CODE No. (DN)show
s
Also, the fan of the indoor unit selected starts its operation and
the swing operation starts if it has the louvers.
[3] Writing the setting data to EEPROM
The settings stored in the EEPROM of the P.C. board for indoor unit servicing are the factory-set values.
*
Step 1
Press
and
SET
CL
TEST
(The unit No. is displayed if the auto-address setting mode is interrupted in [2] step 2 a) 2. on pervious
page.)
A B
Remote
controller
Group wire
Service P.C.board of the unit to
be changed.
Remove the group wire of the
terminal blocks A and B of the
changed indoor unit, and then
install the remote controller only.
Remote
controller
Group wire
Remove CN41 connectors of the indoor units other than
the units to be changed in the same group.
Service P.C.board of the unit to
be changed.
X
(Case 1)
Indoor unit P.C.board
CN
41
(Case 2)
Indoor unit P.C.board
A B
A B
A B
A B
1) Single (Individual) operation
Turn on power of the indoor units and proceed to
2) Group operation
When the above methods cannot be used, follwer to the two cases below.
[3].
indoor units and proceed to
A) In case that power of the exchanged indoor unit only can be turned on
Turn on power of the exchanged 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
[3].
C)
a) Remove all CN41 connectors of the indoor units in the same group except those of the exchanged
In case that power of the indoor units cannot be turned in individually (Case 2)
indoor unit.
b) Turn on power of the indoor units and proceed to [3].
Step 2
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
[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.
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.
Step 3 After writing down all setting data, press
DN
Contents
10
Type
11
Indoor unit capacity
12
System address
13
Indoor unit address
14
Group address
1.
2.
The CODE No. for the Indoor unit type and Indoor unit capacity
are required to set the rotation number setting of the fan.
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.)
FC
Communication protocol
1FC
TEST
After [3] operation has finished, be sure to return the temporarily removed group wire or CN41
connector to the original connection.
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