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Disconnect ALL power before servicing.
Multiple power sources may be present.
Failure to do so may cause property damage, personal injury or death.
Equipment GND
Field GND
Field Splice
Switch (Temperature)
Igniter
Pressure Switch
Overcurrent
Prot. Device
Low Voltage (24V)
Low Voltage Field
High Voltage (115V)
High Voltage Field
Junction
Terminal
Internal To
Integrated Control
Plug Connection
Color
Symbol
Gray:
GY
White:
W
Black:
BK
Red:
R
Blue:
BU
Orange:
OR
Yellow:
Y
Green:
G
Pink:
PK
Azure:
A
Violet:
V
Brown:
BR
Steady On =
Normal Operation
Off =
Control Failure
1 Flash =
System Lockout (Retries Exceeded)
2 Flashes =
Pressure Switch Stuck Closed
3 Flashes =
Pressure Switch Stuck Open
4 Flashes =
Open High Limit Switch
5 Flashes =
Flame Sense without Gas Control Valve
6 Flashes =
Open Rollout Limit Switch or Open Fuse
7 Flashes =
Low Flame Signal
8 Flashes =
Check Igniter or Improper Grounding
Continuous/
Rapid Flashes =
Reversed 115 VAC Polarity
Wiring is subject to change.
Always refer to the wiring
diagram on the unit for the
most up-to-date wiring.
Check codes for proper wiring and circuit protection before installation.
NOTES:
1. Set heat anticipator on room thermostat at 0.7 amps.
2. Manufacturer's specified replacement parts must be used when
servicing.
3. If any of the original wire as supplied with the furnace must be
replaced, it must be replaced with wiring material having a
temperature rating of at least 105ºC. Use copper conductors
only.
WIRING DIAGRAM—ALL WFM19
WARNING
HIGH VOLTAGE!
Goodman 6 Long
OR
Y
W
BK
2nd
Stage
Delay
GY
Mode
Heat
Off
OR
Delay
W
BK (HI)
R
BU (MED HI)
OR (MED)
R (MED LOW)
BK
Y (LOW)
GND
BK
W
Auto Reset
Primary Limit
Control
Y
OR
R
W
Manual Reset Rollout Limit Control(s)
Induced Draft
(Single Control On 45k Btu)
Blower Pressure
Switch
GY
2-Circuit
Connector
Hot
BR
Surface
Igniter
Gas Control Valve (Honeywell)
GY
OR
PK
OR
BU
G
Y
OR
OR
BR
R
GY
W
W
PK
PR
W
W
PR
BU
OR
PK
R
BU
Front Cover
Pressure Switch
GY
GY
G
OR
4. Blower speeds should be adjusted by installer to match the
installation requirements to provide the correct heating
temperature rise and the correct CFM (see Spec Sheet for airflow
chart).
5. Furnace must be permanently grounded and conform to NEC
and local codes.
6. To recall the last 5 faults, most recent to least recent, depress
switch for more than 2 seconds in standby (no thermostat
inputs).
TR(6)
GND
GND(8)
MVC(9)
MVH(12)
MVL(2)
PS(10)
PSO(4)
HLI(7)
HLO(1)
RO2(11)
RO1(5)
TH(3)
24 VAC
115 VAC
XFMR-H
FS
IGN
IND
COOL-H
EAC-H
LINE-H
GND
N
W
GND
BK
L
51
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