1083287-UIM-A-0114
40
Johnson Controls Unitary Products
SECTION XIII: WIRING DIAGRAM
FIGURE 43:
Wiring Diagram
Wiring Diagram - 95% Single-Stage Furnace
EAC
HUM
COOL
HEAT
EAC
HUM
HSI
HUM
DS
TST
GND
GND
GV
LS
PS1
EAC
R
G
Y
W
EAC
HUM
BRN
ROS
ROS
W
Y
G
C
R
BLU
BLU - MED HI
BLK
DS
GRN
BRN
BRN
GND
HSI
IDM
BLK - HI
YEL - MED LOW
RED - LOW
WHT
MOT
GRN
GND
BRN
BLK
WHT
GRY
GRY
TAN
TAN
WHT
WHT
WHT 115VAC
24V SEC
115V COM
PRI
XFMR
FURNACE CONTOL
24V SEC
115V COM
XFMR
PRI
115VAC
1
2
3
4
1
2
C
1
2
3
4
5
6
8
7
9
10
11
12
C
G
R
W
Y/Y2
PARK
PARK
XFMR
EAC-H
HEAT
HI COOL
L1
NEUTRALS
C
C
NO
NO
NO
ROS
ROS
FLAME SENSOR
GV
PS2
RED/WHT
RED/BLK
YEL
RED
YEL
PRP
ORN/BLK
RED
ORN
RED/GRN
C
LS
1
2
NO
WHT
SEE NOTE 2
C
NO
PS1
PS2
C
NO
THE 40,000 INPUT
FURNACE HAS ONLY
ONE ROLLOUT SWITCH
HUM
Flashes
Diagnostic Fault Codes
Fault Condition
Power Off or blown fuse
Normal Operation
Normal Operation with call for heat
Control Failure
Twinning error OR reversed 24V leads
Low flame sense current
No G from thermostat
Flame present with gas off
Check Pressure switch wiring
Vent, intake, OR termination problem
Airflow problem OR open fuse
Flame Rollout OR open fuse
Repeated 3 Red
Failed to light burners
Loss of flame during call for heat
Hot/Neutral reversed OR poor
ground/neutral OR Twinning error
Gas valve shorted "ON"
Check blower motor/wiring
None
Slow Green
Slow Amber
Steady on Red
Rapid Red
Rapid Amber
4 Amber
1 Red
2 Red
3 Red
4 Red
5 Red
6 Red
7 Red
8 Red
9 Red
10 Red
11 Red
CAP
CAP
SERVICING THIS UNIT
OPEN ALL DISCONNECTS BEFORE
CAUTION
PRECAUTION
OUVREZ LES DISJONCTEURS AVANT
DE PROCEDER AVEC LE SERVICE
1040042-UWD-A-0413
Fault Code Retrieval
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.
Notice - Only a qualified service technician should use this feature.
Fault code retrieval functions will work only if there are no active thermostat signals.
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.
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.
DS -
ROS -
TST -
PS1 -
PS2 -
MOT -
IDM -
CAP -
HSI -
LS -
HUM -
XFMR -
GV -
EAC -
Legend
Door switch
Rollout switch
Wall thermostat
Pressure switch
Condensate pressure switch
Circulating motor
Inducer motor
Capacitor
Hot surface igniter
Limit switch
Humidifier
Transformer
Gas valve
Electronic air cleaner
DS -
ROS -
XFMR -
LS -
HSI -
PS1 -
PS2 -
MOT -
IDM -
GV -
HUM -
TST -
CAP -
EAC -
Legende
Commutateur de porte
Commutateur de roulement
Transformeur
Commutateur de limite
Ignition de surface chaud
Commutateur de pression
Commutateur de pression,
condensation
Moteur soufflerie
D'induct moteur
Soupape de gaz
Humidificateur
Thermostat
Capaciteur
Filtre électrique
IDM
BLOWER
MOTOR
