Service Functions - Mitsubishi Electric MSZ-GE22VA-A1 Service Manual

8

SERVICE FUNCTIONS

MSZ-GE22VA MSZ-GE22VAD MSZ-GE25VA
MSZ-GE35VA MSZ-GE35VA2
MSZ-GE50VA MSZ-GE50VA2
MSZ-GE71VA MSZ-GE71VAD MSZ-GE80VA
8-1. TIMER SHORT MODE
For service, the following set time can be shortened by bridging JPG and JPS on the electronic control P.C. board. (Refer
to 10-7.2,3.)
Set time: 3 minutes → 3 seconds (It takes 3 minutes for the compressor to start operation. However, the starting time is
shortened by bridging JPG and JPS.)
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.
How to modify the remote controller P.C. board
Remove batteries before modification.
The board has a print as shown below:
MSZ-GE22VA MSZ-GE22VAD MSZ-GE25VA
MSZ-GE35VA MSZ-GE35VA2 MSZ-GE35VAD MSZ-GE42VA
MSZ-GE50VA MSZ-GE50VA2 MSZ-GE50VAD
MSZ-GE60VA MSZ-GE60VAD MSZ-GE71VA
MSZ-GE80VA MSZ-GE80VA2
The P.C. board has the print "J1" and "J2". Solder "J1" and "J2" according to the number of indoor unit as shown in Table 1.
After modification, press the RESET button.
Table 1
No. 1 unit
No. 2 unit
No. 3 unit
No. 4 unit
How to set the remote controller exclusively for particular indoor unit
After you turn the breaker ON, the first remote controller that sends the signal to the indoor unit will be regarded as the remote
controller for the indoor unit.
The indoor unit will only accept the signal from the remote controller that has been assigned to the indoor unit once they are set.
The setting will be cancelled if the breaker is turned OFF, or the power supply is shut down.
Please conduct the above setting once again after the power has restored.
OBH531E
MSZ-GE35VAD MSZ-GE42VA
MSZ-GE50VAD MSZ-GE60VA
MSZ-GE25VAD MSZ-GE33VA
MSZ-GE80VAD
J1
1 unit operation
No modifi cation
—
—
—
MSZ-GE25VAD MSZ-GE33VA
MSZ-GE80VA2 MSZ-GE80VAD
MSZ-GE42VAD
J1 J2
MSZ-GE71VAD
J2
2 units operation
Same as at left
Solder J1
—
—
15
MSZ-GE42VAD
MSZ-GE60VAD
NOTE: For modification, take out
the batteries and press the
OPERATE/STOP (ON/OFF)
button 2 or 3 times at first.
After modification, put back
the batteries then press the
RESET button.
3 units operation
Same as at left
Same as at left
Solder J2
— Solder both J1 and J2
4 units operation
Same as at left
Same as at left
Same as at left