Lennox MMDA018S4-1P User Manual

Lennox Mini-Split Service Manual / Page 101
T2
T1
CN6
4
BLACK
WHITE
INDOOR UNIT
MAINBOARD
CN23
ON/OFF
Remote
Control
CN33
ALARM
Alarm
Output
Reactor
CN8
CN18
RED
RED
DISPLAY
BOARD
TO WIRE
CONTROLLER
10
CN10
5
CN13
M
PUMP
2
T2B
INDOOR COIL OUTLET TEMP. SENSOR
CN7
CN9
E Y X Q E P
To outdoor
Comm.Bus
To CCM
Comm.Bus
55 
DC MOTOR
DRIVER MODULE
CN13
CN3
3
CN15
5
M
RED
CN2
CN1
BLACK
POWER SUPPLY
L1
L2
Y/G
Y/G
CN3
FILTER-BOARD
%0
%0
%0
;)
%0
%0
RED
BLACK
CN5
WATER LEVEL SWITCH
INDOOR COIL TEMP. SENSOR
ROOM TEMP. SENSOR
FAN
MMDA024S4-1P Ducted Units Wiring Diagram
Typical wiring diagram.
Refer to wiring diagram on
the unit for actual wiring.
MMDA036S4-1P & MMDA048SA-1P Ducted Units Wiring Diagram
Typical wiring diagram.
Refer to wiring diagram on
the unit for actual wiring.
T2
T1
CN6
4
INDOOR COIL TEMP. SENSOR
ROOM TEMP. SENSOR
BLACK
WHITE
INDOOR UNIT
MAINBOARD
CN23
ON/OFF
Remote
Control
CN33
ALARM
Alarm
Output
RED
CN2
CN1
BLACK
72287'22581,7
1 2
Y/G
3
CN41
YELLOW
Reactor
CN8
CN18
RED
RED
DISPLAY
BOARD
TO WIRE
CONTROLLER
10
CN10
5
CN13
M
PUMP
2
Y/G
CN3
CN9
E Y X
To CCM
Comm.Bus
DC MOTOR
DRIVER MODULE
CN13
CN3
3
CN15
5
M
CN5
WATER LEVEL SWITCH
FILTER-BOARD
&1
&1
&1
<*
&1
&1
RED
BLACK
FAN

Lennox MMDA018S4-1P Specifications

General

Brand	Lennox
Model	MMDA018S4-1P
Category	Air Conditioner
Language	English