Mitsubishi Electric MSC-C07TV Service Manual page 46

Table 1
No. 1 unit
No. 2 unit
No. 3 unit
No. 4 unit
NOTE : At power supply failure or installation, indoor unit deletes the memory about remote controller. When the power supply
is turned on and indoor unit receives the first signals from the remote controller, the remote controller number is desig-
nated as the indoor unit number. Therefore at and after the second time indoor unit accepts the remote controller of
the initial setting number.
At setting - error, turn the power supply off to cancel the individual operation and then turn the power supply on to
restart the setting.
10-5. REMOTE CONTROLLER (How to set the type)
This remote controller setting needs to be switched according to the type of air conditioner (COOL & HEAT or COOL
ONLY).
If the setting is incorrect, the air conditioner does not operate normally. Therefore, check if the setting corresponds to
the type of air conditioner. If it does not, correct the setting as shown below.
10-6. MU TYPE / MUH TYPE SWITCH OVER AND AUTO RESTART FUNCTION
1. MU TYPE / MUH TYPE SWITCH OVER
The indoor units for MU type and MUH type are
common specifications. Set switch on the indoor elec-
tronic control P.C. board according to the type of out-
door unit.The units are set for MUH type when they
are shipped from the factory.
How to switch over MU TYPE / MUH TYPE
!
Turn off the main power for the unit.
@
Pull out the electronic control P.C. board(Refer to
page59.), and change switch(SW2-2) on the
indoor electronic control P.C. board according to
the type of outdoor unit as following figures.
Outdoor unit MU type
Set 2 switch upside.
1 2
1 2
SW2
1 unit operation
No modification
–
–
–
Slide switch
Outdoor unit MUH type
Set 2 switch downside.
1 2
1 2
SW2
2 units operation
Same as at left
Solder J1
–
–
Type
The position
of the slide
switch
SW2-1 sets the AUTO RESTART FUNCTION ON / OFF.
SW2-2 switches over the MU type/ MUH type.
When the units are shipped from the factory, SW2 is as follows.
SW2-1: AUTO RESTART FUNCTION OFF
SW2-2: MUH type
CN201
INDOOR ELECTRIC CONTROL P.C. BOARD
NOTE:•
If the indoor-outdoor connecting wire is incorrectly
connected on the terminal block, the unit does not
operate normally.
•
If a ground is incorrect, it may cause an electric shock.
46
3 units operation
Same as at left
Same as at left
Solder J2
– Solder both J1 and J2
COOL & HEAT COOL ONLY
C11
CN211
TAB12
CN202
IC101
1 2
SW2
4 units operation
Same as at left
Same as at left
Same as at left
}
SW2
1 2
1 2
SW1
SW2