Toshiba MMK-UP0051DHPL-E(TR) Service Manual page 161

Step 3 After writing down all setting data, press
(It takes approx. 1 min until the remote control operation is available again.)
CODE No.required at least
DN
10
11
12
13
14
FC Communication protocol
1FC
[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.
If the plug for short-circuit is attached on the P.C. board
before replacement, attach it on the P.C. board replaced.
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
2) Group operation
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
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
When the above methods cannot be used, follwer to the two cases below.
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
indoor unit.
b) Turn on power of the indoor units and proceed to
After [3] operation has finished, be sure to return the temporarily removed group wire or
CN41 connector to the original connection.
(Case 1)
Indoor unit P.C.board
A B
Group wire
[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.
SET CL
Step 1
Press , and
* 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)shows
the swing operation starts if it has the louvers.
(The unit No.
page.)
Contents
Type
Indoor unit capacity
System address
Indoor unit address
Group address
[3].
Service P.C.board of the unit to
be changed.
A B
Remove the group wire of the
X
terminal blocks A and B of the
changed indoor unit, and then
Remote
install the remote controller only.
controller
TEST
buttons on the remote control simultaneously for more than 4 seconds.
is displayed if the auto-address setting mode is interrupted in [2] step 2 a) 2. on pervious
TEST
button to return to the normal stop status.
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.)
CN34
(Red)
CN504
(White)
J01
[3].
[3].
(Case 2)
Indoor unit P.C.board
CN
41
A B
Remove CN41 connectors of the indoor units other than
the units to be changed in the same group.
. Also, the fan of the indoor unit selected starts its operation and
- 161 -
SW501
J08
J09
[3].
(Case 2)
A B A B
Group wire
Remote
controller
Service P.C.board of the unit to
be changed.