Operation Control Function By The Wired Remote Controller - Mitsubishi SCM40ZJ-S Service Manual

(2)

Operation control function by the wired remote controller

(a) Switching sequence of the operation mode switches of remote controller
(b) [CPU reset]
This functions when "CHECK" and "GRILL" buttons on the remote controller are pressed simultaneously. Operation is same
as that of the power supply reset.
(c) [Power failure compensation function]...Electric power supply failure
• This becomes effective if "Power failure compensation effective" is selected with the setting of remote controller function.
• Since it memorizes always the condition of remote controller, it starts operation according to the contents of memory no
sooner than normal state is recovered after the power failure. Although the auto swing stop position and the timer mode are
cancelled, the weekly timer setting is restored with the holiday setting for all weekdays.
After recovering from the power failure, it readjusts the clock and resets the holiday setting for each weekday so that the
setting of weekly timer becomes effective.
• Content memorized with the power failure compensation are as follows.
Note (1) Items ➅ , ➆ and ➇ are memorized regardless whether the power failure compensation is effective or not while the setting of silent mode is cancelled
regardless whether the power failure compensation is effective or not.
At power failure – Operating/stopped
➀
If it had been operating under the off timer mode, sleep timer mode, the state of stop is memorized. (Although the
timer mode is cancelled at the recovery from power failure, the setting of weekly timer is changed to the holiday
setting for all weekdays.)
Operation mode
➁
Airflow volume mode
➂
Room temperature setting
➃
Louver auto swing/stop
➄
However, the stop position (4-position) is cancelled so that it returns to Position (1).
"Remote controller function items" which have been set with the remote controller function setting ("Indoor
➅
function items" are saved in the memory of indoor unit.)
Upper limit value and lower limit value which have been set with the temperature setting control
➆
Sleep timer and weekly timer settings (Other timer settings are not memorized.)
➇
[Parts layout on remote controller PCB]
Master/ slave setting when more than one remote controllers are used
A maximum of two remote controllers can be connected to one indoor unit (or one group of indoor units.)
Indoor units
Remote controller cord (no polarity)
Remote controller Remote controller
SW1 "Master" SW1 "Slave"
Set SW1 to "Stave" for the slave remote controller. It was factory set to "Master" for shipment.
Note: The setting "Remote controller thermistor enabled" is only selectable with the master
remote controller in the position where you want to check room temperature.
The air conditioner operation follows the last operation of the remote controller regardless
of the master / slave setting of it.
Caution
When using multiple remote controllers, the following dispiays or settings
cannot be done with the slave remote controller. It is available only with
the master remote controller.
Louver position setting (set upper or lower limit of swinging range)
Setting indoor unit functions
Setting temperature range
Operation data display
Error data display
Silent mode setting
Test operation of drain pump
Remote controller sensor setting

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'11 • SCM-SM-110
Switch Setting Contents
M Master remote controller
SW1
S Slave remote controller
Master
SW2
SW1
Board
Slave
SW1
Upper
Lower