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Discharge temperature thermistor
Indoor pipe temperature thermistor
Defrost thermistor
Fin temperature thermistor
Purpose
Protection
Defrosting Protection
Defrosting
Protection
Compressor
LEV
Outdoor
fan motor
4-way
valve
Sensor
Actuator
Relation between main sensor and actuator.
9-29. Relation between main sensor and actuator
10
SERVICE FUNCTIONS
10-3. 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.
10-2. 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 page 90 or 91.)
Set time : 1-minute
➔
1-second
Set time : 3-minute
➔
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.)
10-1. CHANGE IN DEFROST SETTING
MSZ-G09/12SV-
, MSZ-G09/12SV-
<JS> When the JS wire of the outdoor electronic control P.C. board is cut, the defrost temperature will be changed.
(Refer to page 92.)
E2
E1
Jumper wire
Change point
Deforst finish temperature changes from 13
:
to 15
:
.
JS
(1) How to modify the remote controller P.C. board MSZ-G09/12SV-
Remove batteries before modification.
The board has a print as shown below;
E1
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.
MSZ-G09SV -
MSZ-G09SV -
E2
E1
MSZ-G12SV -
MSZ-G12SV -
MSZ-G20SV -
E1
E2
E1
MUZ-G09SV -
MUZ-G09SV -
E2
E1
MUZ-G12SV -
MUZ-G12SV -
MUZ-G20SV -
E1
E2
E1
OB245--3qxp 02.10.22 4:15 PM Page 63