Service Functions - Mitsubishi Electric MSZ-GS06NA - U1 Service Manual

7

SERVICE FUNCTIONS

MSZ-GS06NA MSZ-GS09NA MSZ-GS12NA MSZ-GS15NA MSZ-GS18NA MSZ-GS24NA
MSZ-GS30NA MSZ-GS36NA MSZ-GS30NA2 MSZ-GS36NA2
MSY-GS09NA MSY-GS12NA MSY-GS15NA MSY-GS18NA MSY-GS24NA MSY-GS30NA
MSY-GS36NA MSY-GS30NA2 MSY-GS36NA2
7-1. TIMER SHORT MODE
For service, the following set time can be shortened by bridging the timer short mode point on the electronic control P.C.
board. The time will be shortened as follows. (Refer to 9-7.)
Set time : 1-minute
Set time : 3-minute
7-2.HOW TO SET REMOTE CONTROLLER EXCLUSIVELY FOR A PARTICULAR INDOOR UNIT
A maximum of 4 indoor units with wireless remote controllers can be used in a room.
MSZ-GS30/36NA MSY-GS30/36NA
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:
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
1 unit operation
No modification
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 been restored.
OBH874A
1-second
3-second (It takes 3 minutes for the compressor to start operation. However, the starting time is
shortened by short circuit-of the timer short mode point.)
J1
J2
2 units operation
Same as at left
Solder J1
3 units operation
Same as at left
Same as at left
— Solder J2
—
17
NOTE : For modification, take out the
batteries and press the OFF/
ON (stop/operate) button
twice or 3 times at first.
After finish modification, put
back the batteries then press
the RESET button.
4 units operation
Same as at left
Same as at left
Same as at left
— Solder both J1 and J2