Trane M4MHW17-A - System Wiring Diagrams; Color Key and Indoor Diagrams

Wiring Diagrams
Color Key
Note: Jumper cap is used to determine fan speed and the swing angle of horizontal louver for this model. The
unit will not operate without the correct jumper cap. When replacing boards the jumper cap must be moved to
the new board.
NOTE: The wiring diagrams in this guide are included as a reference. The manufacturer
has a policy of continuous product and product data improvement and reserves the right
to change design and specifications without notice. Always check the unit nameplate and
wiring diagram for the actual unit requirements.
Symbol Symbol Color Symbol Symbol Color Symbol Name
WH White GN Green CAPJumper cap
YE Yellow BN Brown COMP Compressor
RD Red BU Blue Grounding wire
YE/GN Yellow/Green BK Black
//
VT Violet OG Orange
//
STEPPING
CAP
BLOCK
TERMINAL
G
EVAPORATOR
JUMP
AP2: MAIN BOARD
YEGN
BK
BN
YEGN
N1
3
2
N(1)
XT1
BU
AC-L
COM-OUT
MOTOR
OUTDOOR UNIT
T-SENSORDISP2DISP1
RT1
θ
AP1
ROOM TUBE TEMP.SENSOR TEMP.SENSOR
DISPLAY BOARD
RECEIVER AND
θ
RT2
SWING-UD
M2
ELECTRIC BOX
G
WH(BU)
BK
RD(BN)
M1
AP4
WIFI
WIFI
MODULE
SWING-LR
M3
STEPPING
MOTOR
LEFT-RIGHT
COM-MANUAL
AP3
WIRED
CONTROLLER
DRY-C
AP5
DRY
CONTACT
(DOOR-C)
PGF PG
FAN
MOTOR
OPTIONAL
OPTIONAL
OPTIONAL OPTIONAL
GN(YEGN)
Indoor Cooling and Heat Pump Unit 9K-12K
88-M4MHW17-1B-EN 31
Installer's Guide