REFRIGERANT SYSTEM DIAGRAM
8
7
SERVICE FUNCTIONS
8
8-2. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION
A maximum of 4 indoor units with wireless remote controllers can be used in a room.
In this case, to operate each indoor unit individually by each remote controller, P.C. boards of remote controller must be
modified according to the number of the indoor unit.
8-1. TIMER SHORT MODE
For service, set time can be shortened by short circuit of JPG and JPS the electronic control P.C. board.
The time will be shortened as follows. (Refer to 9-6.)
Set time : 1 minute
➔
1-second
Set time : 3 minutes
➔
3-second (It takes 3 minutes for the compressor to start operation. However, the starting time is
shortened by short circuit of JPG and JPS.)
How to modify the remote controller P.C. board
Remove batteries before modification. The board has a print as shown below :
NOTE : For remodelling, take out the batteries and press the OPERATE/STOP(ON/OFF) button twice or 3 times at
first.After finish remodelling, put back the batteries then press the RESET button.
MSC-GA20VB MSC-GA25VB MSC-GA35VB
J2
J1
MSC-GA20VB MSC-GA25VB MSC-GA35VB
Indoor
heat
exchanger
Room temperature
thermistor
RT11
Refrigerant pipe
[
9.52
(with heat insulator)
Unit:mm
Indoor coil
thermistor
RT12
Flared connection
Flared connection
Refrigerant pipe
[
6.35
(with heat insulator)
Refrigerant flow
in cooling
Remote controller model : KP1A
OB385A.qxp 06.5.9 7:02 PM Page 8
