Mitsubishi MS-18RV Manuel de service télécharger pdf (Page 45)

SERVICE FUNCTIONS

10-2. 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.

10-1. 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 58 or 59.)

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.)

How to modify the remote controller P.C. board

Remove batteries before modification.

The board has a print as shown below :

NOTE :

At power supply failure or installation, indoor unit deletes the memory about remote controller. When the power supply

is turned on and indoor unit receives the first signals from the remote controller, the remote controller number is desig-

nated as the indoor unit number. Therefore at and after the second time indoor unit accepts the remote controller of the

initial setting number.

At setting-error, turn the power supply off to cancel the individual operation and then turn the power supply on to restart

the setting.

MS-18RV -

MS-24RV -

MS-30RV -

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, push the RESET button.

NOTE : For remodelling, take out the bat-

teries and push the

OPERATE/STOP(ON/OFF) button

twice or 3 times at first.

After finish remodelling, put back

the batteries then push the RESET

button.

Table 1

No. 1 unit

No. 2 unit

No. 3 unit

No. 4 unit

1 unit operation

No modification

–

2 units operation

Same as at left

Solder J1

–

3 units operation

Same as at left

Solder J2

–

4 units operation

Same as at left

Solder both J1 and J2

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Mitsubishi MS-18RV Manuel de service Page 45

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