Service Functions - Mitsubishi Electric MSZ-G09SV-E1 Service Manual

10

SERVICE FUNCTIONS

MSZ-G09SV -
E1
MSZ-G09SV -
E2
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 JPS on and the electronic control P.C. board.
The time will be shortened as follows.
3-minute delay : 3-minute
AUTO START : 1 hour
AUTO STOP : 1 hour
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 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 at first.
After finish remodelling, put back the batteries then push the RESET-button.
The P.C. board has the print "J1" and "J2". Jumper wires are mounted to each "J1" and "J2".Cut "J1" and "J2" according
to the number of indoor unit as shown in Table 1.
After modification, push the RESET. button near the MIN-button on the remote controller.
Table 1.
No.1 unit
No.2 unit
No.3 unit
No.4 unit
MSZ-G12SV -
E1
MSZ-G12SV -
E2
Deforst finish temperature changes from 13: to 15:.
3-second.
1-minute
}
Short the connector during the timer mode.
1-minute
1 unit operation
No modification
Change point
2 unit operation
Same as at left
Cut J1
41
(Refer to page 59.)
>
E1
3 unit operation
Same as at left
Same as at left
Cut J2
Cut both J1 and J2
4 unit operation
Same as at left
Same as at left
Same as at left