34
Figure 38
Figure 38. Gas Direct Ignition Furnace, Heating & a/c Ready - all M1M Models
See Table
BLOWER
MOTOR
SINGLE
SPEED
ON/OFF
SWITCH
C
R
G
W
GAS VALVE
HI-LIMIT
AUX. LIMIT
TRANS-
FORMER
PRESSURE
SWITCH
6
5
4
3
2
1
6
5
4
3
2
1
COMBUSTION FAN
L
N
C
R
24 V
115 V
2
1
1
4
5
2
6
3
1
2
3
4
5
6
7
8
9
IGNITOR
L1
NEUTRAL
GROUND SCREW
FURNACE ELECTRICAL BOX
24V
TIE
WIRE
See Table
CONNECTOR
HOUSING CAP
GROUND
SCREW
CONTROL LIGHT STATUS
W
O
L
L
E
Y
D
E
R
l
a
n
g
i
S
e
m
a
l
F
d
o
o
G
N
O
y
d
a
e
t
S
K
O
l
o
r
t
n
o
C
N
O
y
d
a
e
t
S
l
a
n
g
i
S
e
m
a
l
F
k
a
e
W
g
n
i
k
n
il
B
r
e
w
o
p
o
N
F
F
O
y
d
a
e
t
S
Rapid Flash False flame or internal control fault
Steady OFF
No Flame Signal
1 Flash
Limit switch is open
2 Flashes
Pressure switch is open with inducer on
3 Flashes
Pressure switch is closed with inducer off
4 Flashes
Lockout due to failed ignition
5 Flashes
115 vac & neutral reversed or no ground
CONTROL
LIGHTS
Jumper must be removed if
converting to a multispeed blower.
Jumper is required for M1MA
models and M1MB 090
A/C & Heating Speeds: Refer to
Table 12, A/C Blower Selection
in the manual
RED (LO)
BL
AC
K (HIGH
)
BLUE (MED. HI
)
ORANGE (MED
. LO
)
WHIT
E
RED (LO)
BL
AC
K (HIGH
)
BLUE (MED. HI
)
WHIT
E
6
5
4
3
2
1
LEGENDS
115V:
FIELD 115V:
24V:
FIELD 24V:
BLOWER
MOTOR
4 SPEED
NOTES
1. Incoming power must be polarized. Observe color
coding. (See furnace data label for electrical information.)
2. If any of the original wires (as supplied with the
appliance) must be replaced, use 105˚C Thermoplastic
type wire or its equivalent.
SUPPLIED
BY INSTALLER
C W G
R
CO
M
MOTOR
BLOWER
3 SPEED
MOTOR
See Table
See Table
Gas Direct Ignition Furnace,
Heating & A/C Ready,
M1M All Models.
710152D
(Replaces 710152C)
Blower Wire Table
Blower Wire Connections
Furnace
Wire #1
Wire #2
Wire #3
Wire #4
Model
Red
Black
Blue
Orange
M1MA 056/
Tie
Tie
Tie
Control
070/077/090
Wrapped Wrapped Wrapped
Board "H"
M1MB
Tie
Control
Tie
Control
056
Wrapped Board "C" Wrapped Board "H"
M1MB
Tie
Tie
Control
Control
070/077
Wrapped Wrapped Board "H" Board "C"
M1MB
Tie
Control
Tie
Tie
90
Wrapped Board "H" Wrapped Wrapped
M1M(C,D)
Control
Tie
Tie
Control
056/070
Board "H" Wrapped Wrapped Board "C"
M1M(C,D)
Tie
Tie
Tie
Control
077/090
Wrapped Wrapped Wrapped Board "H"
01/15
WIRING DIAGRAM
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
NE
U
XFRM L1 H C
BLACK
BLACK
BLACK
WHITE
WHITE
WHITE
ORANGE
ORANGE
BLACK
BLACK
BLA
CK
RE
D
GREEN
WHIT
E
YELL
OW
YELL
OW
BL
AC
K
BL
AC
K
GREEN
BLUE
BLUE
BLUE
GR
AY
BLACK
RED
Electrical Information
