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SECTION XII: WIRING DIAGRAM
CAUTION
OPEN ALL DISCONNECTS BEFORE
SERVICING THIS UNIT
RED/WHT
ROS
ROS
RED/BLK
RED
ORN/BLK
PS1
PS2
WHT
NO
C
C
NO
ORN
LS
RED/GRN
RED
PRP
FS
SS
DS
NO
C
1
2
EAC
HUM
PF
1600/2000 CFM
(3/4HP AND 1HP)
MODELS ONLY
R
R
1,2,3,4
OR 5
G
G
C
Y1
Y1
Y/Y2
Y/Y2
W
W
TST
NOTES:
1. 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 221 degrees F (105 degrees C ).
2. Blower motor speed connections shown are typical, but may vary by
model and application.
NOTES:
1. Si l'un des fils d'origine fourni avec ce four doit être remplacé, il doit être
remplacé avec le fil ayant un degré de température d'au moins
221 degrés F (105 degrés C ).
2. Les connexions à grande vitesse du moteur du ventilateur indiqués sont
typiques, mais peuvent varier selon le modèle et par application.
FIGURE 34: Wiring Diagram
Johnson Controls Ducted Systems
Wiring Diagram - 95% Standard ECM M/H Furnace
LO COOL
Y1
Y/Y2
W
R
G
C
FURNACE CONTROL
10 11 12
8
9
7
4
5
6
4
3
2
1
1 2
3
2
1
IDM
GND
GV
115VAC
EAC
EAC
HUM
GND
HUM
IDM
HSI
L
N
MOT
G
XFMR
115V
COM
PRI
24V SEC
C
MOT
ROS
ROS
GV
GND
PS1
PS2
NO
C
C
NO
LS
BLU/WHT
RED-LOW
YEL-MED LO
GRY-MED
SEE NOTE 2
BLU-MED HI
HI COOL
BLK-HI
HEAT
1600-2000 CFM
(3/4HP AND 1HP)
EAC
MODELS ONLY
PF
L1
NO
C
DS
XFMR
LINE
HUM
WHT
WHT
BLU
BRN
GRY
WHT
GRY
WHT
HSI
S3
Diagnostic Fault Codes
Flashes
Fault Condition
None
Power Off or blown fuse
Slow Green
Normal Operation
Normal Operation with call for heat
Slow Amber
4 Amber
No G from thermostat
Steady on Red
Control Failure
1 Red
Flame present with gas off
2 Red
Pressure switch stuck closed
3 Red
Vent, intake, or termination problem
4 Red
Airflow problem
5 Red
Flame Rollout
6 Red
Repeated 3 Red
7 Red
Failed to light burners
Loss of flame during call for heat
8 Red
9 Red
Hot/Neutral reversed OR
poor ground/neutral
10 Red
Gas valve shorted "ON"
11 Red
Check blower motor/wiring
Refer to Installation Manual for more detailed information.
Fault Code Retrieval
Notice - Only a qualified service technician should use this feature.
Fault code retrieval functions will work only if there are no active thermostat signals.
To retrieve fault codes, push and release ERROR button on control board. The LED will flash the
last five error codes, beginning with the most recent. If there are no fault codes in memory, the LED
will give two green flashes. To clear the fault code memory, push and hold the ERROR button for
at least five seconds. The LED will give three green flashes when the memory has been cleared.
5715184-BIM-A-0519
PRECAUTION
OUVREZ LES DISJONCTEURS AVANT
DE PROCEDER AVEC LE SERVICE
GND
5
C
4
Legend
G
MOT
3
N
2
DS -
Door Switch
L
1
ROS -
Rollout Switch
FS -
Flame Sensor
BLK/WHT
TST -
Wall Thermostat
BLK
1
2
PS1 -
Pressure Switch
SS
PS2 -
Condensate Pressure Switch
MOT -
Circulating Motor
IDM -
Inducer Motor
115VAC
HSI -
Hot Surface Igniter
EAC -
Electronic Air Cleaner
LS -
Limit Switch
HUM -
Humidifier
XFMR -
Transformer
WHT
GV -
Gas Valve
SS -
System Switch
Legende
Commutateur de porte
DS -
Commutateur de roulement
ROS -
Transformeur
XFMR -
LS -
Commutateur de limite
HSI -
Ignition de surface chaud
PS1 -
Commutateur de pression
MOT -
Moteur soufflerie
D'induct moteur
IDM -
Soupape de gaz
GV -
Humidificateur
HUM -
Commutater de pression,
PS2 -
condensation
Thermostat
TST -
FS -
Capteur de flame
HUM -
Filtre électrique
SS -
Commutateur de système
5754336-UWD-A-0519
33
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