Service Functions; Relation Between Main Sensor And Actuator; Timer Short Mode; P.c. Board Modification For Individual Operation - Mitsubishi Electric MSZ-G09SV Service Manual

9-29. Relation between main sensor and actuator

Relation between main sensor and actuator.
Sensor
Discharge temperature thermistor
Indoor pipe temperature thermistor
Defrost thermistor
Fin temperature thermistor
10

SERVICE FUNCTIONS

MSZ-G12SV -
MSZ-G09SV -
E1
MSZ-G12SV -
MSZ-G09SV -
E2
MSZ-G20SV -
10-1. CHANGE IN DEFROST SETTING
<JS> When the JS wire of the outdoor electronic control P.C. board is cut, the defrost temperature will be changed.
Jumper wire
JS

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
Set time : 3-minute

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.
(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;
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.
Purpose
Protection
Defrosting Protection
Defrosting
Protection
MUZ-G09SV -
E1
MUZ-G09SV -
E2
E1
MSZ-G09/12SV-
Deforst finish temperature changes from 13: to 15:.
1-second
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.)
Compressor LEV
MUZ-G12SV -
E1
MUZ-G12SV -
E2
MUZ-G20SV -
, MSZ-G09/12SV-
E1 E2
Change point
E1
63
Actuator
Outdoor 4-way
fan motor valve
E1
E2
E1
(Refer to page 92.)