Mitsubishi Electric Mr.SLIM PLA-SM71EA Service Manual page 36

10-2. ELECTRICAL CIRCUIT (Controller board and wiring diagram (Panel))
10-2-1 DIP SW
SW2
[ LEGEND ]
SYMBOL
U.B ELEVATION PANEL CONTROLLER BOARD
LED ORANGE
LED2
(INTAKE GRILLE CONDITION (See table *1))
LED GREEN
LED4
(COMMUNICATION WITH INDOOR UNIT)
U.K 1 ELEVATION MACHINE
M MOTOR (ELEVATION)
LS21 DETECTION SWITCH (STRING TENSION)
I.B INDOOR UNIT CONTROLLER BOARD
W.B PCB OF SIGNAL RECEIVER
BZ BUZZER
RU RECEIVING UNIT
LED GREEN
LED1
(OPERATION INDICATION)
LED ORANGE
LED2
(PREPARATION FOR HEATING)
EMERGENCY HEATING
SW1
(LONG PRESS FOR OVER 2SEC.)
EMERGENCY COOLING
SW2
(LONG PRESS FOR OVER 2SEC.)
DETECTION SWITCH (INTAKE GRILLE STORAGE)
LS1
R.B WIRED REMOTE CONTROLLER
<*2>SW2 on U.B
LOWERING
SET UP
DISTANCE
ON
1.2m
OFF
1 2 3 4 5 6
1.6m ON
(Initial
OFF
setting)
1 2 3 4 5 6
ON
2.0m
OFF
1 2 3 4 5 6
ON
2.4m OFF
1 2 3 4 5 6
Note: The actual lowering distance might be
different from the distance in the table 2
since it can also be set using the wired
remote controller.
10-2-2. Check point of trouble
<LED 2 Orange display>
Turn OFF : No power supply
Blink : Storage detection switch ON (short)
One blink : Storage detection switch OFF (open)
Two blinks : Tension detection switch OFF (open)
<controller board>
Check item
Up/down controller
P.C. board supply
voltage
Up/down machine
supply voltage
<Up/down machine>
Check item
Storage detection
switch
Tension detection
switch
Motor
Entwining strings
OCH683
LED2
NAME
[EMERGENCY OPERATION]
1. If the wireless remote controller for ELEVATION PANEL is faulty or lost, operation
will be possible using the emergency up/down switch at the wireless signal receiver
or wired remote controller.
▪ For the operation using the emergency up/down switch at the wireless signal
receiver, refer to SW1 and SW2 on the left [LEGEND].
2. When machine for ELEVATION PANEL breaks down, a intake grille is fixed for
a while, and the operation of the unit can be done.
▪ Refer to installation manual with the grille for the details such as an installation
method.
INTAKE GRILLE/DOWN
(SHORT PRESS) U.B
INTAKE GRILLE/UP
(SHORT PRESS)
(GNYE)
LOWERING
Grille side
SET UP
DISTANCE
Indoor unit
ON
side
2.8m OFF
1 2 3 4 5 6
ON
3.2m
OFF
1 2 3 4 5 6
ON
[ Note ]
3.6m
OFF
1 2 3 4 5 6
1. Symbols used in wiring diagram above are,
ON
4.0m OFF
2. The black square ( ) indicates a switch position.
1 2 3 4 5 6
Check point Normal
CN4G
11–14 V DC
(between 1–2)
CN3B
(between 1–2)
10–13.5 V DC
CN3C
(between 1–2)
Check point Normal
CN2E open or short
CN2F, CN2G open or short
CN3B, CN3C 5–20 "
Retention:
Pull string
about 2 kgf
LED4
<*1> LED2 on U.B
U.K 1 U.K 1
LIGHTING
LS21 LS21
LS1
1-TIME BLINKING
M M
2-TIME BLINKING
2 1 3 2 1 3 2 1
CN4G
(BK)
CN3C CN3B
CN2G
(BK) (WH) (WH)
4
2 1 2
1
Lowering distance setting
CN2E CN2F
LED4
(RD) (BK) <See table *2>
ON
SW2
OFF
LED2
1 2 3 4 5 6
4
I.B
CN4G
(BU)
<LED 4 Green display>
Blink
Remarks
Check when instructing up/down with LED
blinking once.
Check contents
Check if it is short when pressing push switch.
Check if it is short when string b is tensioned.
Check if it is not open or short.
Check if string is drawn out by pulling with 4 kgf.
36
LED2 INTAKE GRILLE CONDITION
INTAKE GRILLE HOUSED AND STRING TENSIONED
INTAKE GRILLE NOT HOUSED AND STRING TENSIONED
STRING NOT TENSIONED
W.B
RU
SW2 SW1
BZ
1
LED1 LED2
CNB
(WH)
1 9
9
R.B
TB5 TB6
2
2 2
CN90
(WH) 1 1
: Connector, : Terminal (block).
: Connecting