MORTEX
PRODUCTS
INC
501
TERMINAL
RD
FORT
WORTH,
TX
76106
Page
34
Figure 34: Wiring Diagram Heating Only Models
NOTE:
IF ANY OF THE ORIGINAL WIRE SUPPLIED WITH THIS UNIT MUST BE REPLACED. IT MUST BE REPLACED
WITH TYPE 105°C THERMOPLASTIC OR its EQUIVALENT.
Subject
to
change
without
notice
61GF0077
Copyright by Mortex Products Inc. 2019
Supersedes: Revision 61GF0100B
L1
COOL
HEAT
XFMR
N
E
UT
RAL
S
W
G
C
R
Y
3 AMP
FUSE
SEC
COM
T
ON
OF F
90
75
60
180
150
120
Togg
le
S
w
it
c
h
P
ON /
O
F
F
RE
D
BLK
BLK
BL
K
BL
K
BL
K
BLK
W HT
WH
T
W HT
WH
T
W HT
INDOOR
BLOW ER
MOTOR
W HT
BLK - L1
WH
T
W HT
RED - LOW SPD
CBM
1
20 V
A
C
PI
G
T
A
IL
S
BLK - HI SPD
BRN
BR
N
BR
N
BRN
FLA
M
E
S
E
N
S
O
R
W R 36J GAS VALVE
BRN
ORN
ORN
BLU
BLU
GRY
GRY
GRN
LS
ALS
Auto
Reset
Reset
Manual
BLU
BL
U
BL
U
PS
BL
K
SCHEMATIC DIAGRAM
LADDER DIAGRAM
120 VAC
NEUTRAL
1
2
3
4
5
6
1
2
3
4
5
6
78
9
HOT SURFACE IGNITOR
P
4
6
1
3
2
5
YEL
YEL
YE
L
C
C
120
24
BLU - Med-Hi SPD
9 P
IN
P
L
U
G
HR
CR
CMR
IGNR
L1
BLK
BL
K
BLK
XFMR
INDOOR
FAN
MOTOR
W HT
W HT
BLK
BLK
W HT
1
3
4
6
W HT N
N
N
CO
N
T
R
O
L
BO
AR
D REL
A
Y
S
CBM
IGN
LI
N
E
V
O
LTA
G
E
BL
K
W HT
BLK
BLK
W HT
3A
FUSE
BLU
BL
U
BLU
RED
RED
120 VAC
24 VAC
c
c
120
24
s e c
com
WH
T
WH
T
W HT
LEGEND
BM - Blow e r Motror
CAP - Run Capacitor
CBM - Combustion Blower Motor
CMR - Combustion Motor Relay
COM - 24 VAC Common
CR - Cooling Blower Motor Relay
FP - 9 Pin Female Plug on Control Board
6FP - 6 Pin Female Plug on Control Board
GV - Gas Va lve
GVR - Gas Valve Relay on Control Board
HR - Heating Blower Motor Relay
IGN - Hot Surface Ignitor
INGR - Hot Surface Ignitor Relay on Control Board
LS - Main Limit Switch - Automatic Reset
ALS - Auixiliary Limit Switch - Manual Reset
PS - Combustion Motor Pressure Switch
FS - Flame Sensor
SEC - 24 VAC Pow er
XFMR - Transformar 120 VAC Supply VAC
3A - # Amp Fuse
---- - Field Wiring
- Plug Terminal Connection
NOTE: HR, CMR, CR, GCR and INGR relays are
integrated into the control board
Note s:
1. All field wiring must be per the following:
A: National Electrical Code (NEC) a nd / or
B: Canadian Electrical Code (CEC) and / or
C: State, County, Local, Regional, or City Codes.
2. If any origional (Factory) wire must be replaced;
then replace the wire with wire that has the same
temperature rating of at least 221 degF (105 degC).
3. Only use c opper conductors for field wiring.
4. All replacement components must be properly grounded.
5. Provide circuit breakers sized to protect wiring
service to the control box pigtails.
6. Motors have internal over-temperature protection.
- CAUTION -
Open all disconnects
before servicing
WIRING DIAGRAM 61CC0655A
G18D MOBILE HOME GAS FURNACE
HEATING ONLY
The
rm
os
ta
t
P
ig
ta
ils
RED
BLK
GRN
W HT
BLK
BLK
BL
K
BL
K
WH
T
WH
T
W HT
W HT
BL
K
BLK
BLK
BL
K
PS
ALS
LS
GVR
GVSC
5
6
8
3
4
2
com
BLU
BLU
BLU
ORN
BLU
BLU
BLU
GRY
GRY
BRN
BRN
BRN
BLU
LEGEND
W
C
G
ORN - MED-LOW SPD
Control Board Flash Codes
Steady O N - Control OK
1 Flash - Lockout due to failed ignition
2 Flashes - Pressure switch fault, pressure switch stuck open
3 Flashes - Pressure switch fault, pressure switch stuck closed
4 Flashes - Limit switch is open or limi t switch fault. (5 limit
5 Flashes - Flame sense with no call for heat or gas valve fault
Rapi d Fl ash - L1/neutral reversed or voltage not present on L1
Steady O FF - Control fault or no power
cycles during single call for heat or limit open for
more than 5 minutes
L1
COM
ST5
ST4
ST3
ST2
ST1
BLK
GRN
W HT
RED
ORN
BLU
GND
GRN - Com
RED - Constant Circulation Speed
BLU
WHT - Heating Speed
BLU
W HT - N
GRN - GND
W HT - MED SPD
W HT
GRN - COM
Pin #
9 Pin Plug Pinout
W ire Color
1
2
3
4
5
6
7
8
9
GRN
BLK
W HT
GRN
W HT
ORN
RED
BLK
BLU
Common
Hi Spe ed
Medium Speed
Motor Connection
Ground
Neutra l
Med-Low Speed
Low Speed
Line VAC
Med-High Speed
R
RED
BL
U
RED
GR
N
GRN
BLK
BLK
W HT
BR - Heating Blower Relay - 24 VAC
BRC - Heating Blower Relay 120 VAC Coil
HEAT
W HT
RED
Control
Board
Relay
External
Relay
W HT
RED
BLK
RED
W HT
W HT
WH
T
ORN
BRC
BR
