Lockout Conditions; Connection/Wiring Diagram - Bradford White EF100T150(E)*(N Service Manual

Serial Numbers including and AFTER GB13006174 and ALL EFR models

Lockout Conditions

The system will go into lock out mode for the following reasons:
1. ERROR CODE 62 or 63
Control board will go into "Soft Lockout" if the main burner cannot be lit or fails to prove flame after 3 ignition trials.
The water heater display indicates a lockout condition by showing an error code number (62 or 63) with "Service
Needed" in the control display window. Refer to error codes in the diagnostic section of this Service Manual. In a
"Soft Lockout" condition, the control will wait for 60 minutes and then make 3 more attempts to light the main
burners. Soft lockout reset is accomplished by depressing the lower right button under "Reset" for 3 seconds.
2. ERROR CODE 65
If the top of the tank should exceed 200°F, then the high limit control will shut off the burner and the water heater
will go into a "Hard Lockout". Error code 65 will be shown in the water heater display. The control can only be
reset in the "Service Mode", which is detailed in the "Troubleshooting" section of this Service Manual.
3. ERROR CODE 29
If the exhaust terminal becomes blocked or the condensate elbow fails to drain condensate, the normally closed
exhaust pressure switch will open, the gas valve closes, and error code 29 will appear on the control display.
When the condition is corrected, the error code will disappear and the water heater will resume normal operation.
No resetting of the control display is needed for the pressure switch error code.
4. ERROR CODE 26
If the vent safety switch located near the exhaust pressure switch should open, the gas valve will close, the blower
will post-purge and error code 26 will appear on the display. The lockout condition will reset once the problem is
corrected and the switch reset. Refer to "Vent Safety Switch Testing and Replacement" in this Service Manual.
CONNECTION DIAGRAM
CONTROL
LOWER
7 8
SENSOR
& ECO
4 5
BK
Y
BK 1 2
1 2 3
R
GY
SENSOR 1
24V
1
2
3
W
CONTROL
R
DISPLAY
BK
1
2
SECONDARY
BL Y
1
24V
LOAD
2
LINE 3
120V
TRANSFORMER PRIMARY

CONNECTION/WIRING DIAGRAM

MV
BR
9
24V
PV/MV
BL
6
3 GAS VALVE
R GY
24V
R
R
GY
GY GY
E-COM
6 PIN CONNECTOR
TO PRESSURE
1
SWITCH HARNESS
2
W
120V
GN
4 1
3
SENSE
BK
5 2
M
1
W
6 3
2
COMBUSTION
HIGH VOLTAGE
3
INDUCER BLOWER
E-COM
CONTROL BOARD
LINE IN
1
BK
2
GN
3
GN
W
4
For models with Honeywell Integrated Control
System w/ Direct Spark Ignition
BLACK GROUND
120 VOLTS
P.S. (N.C.)
P.S. TSTAT
COLL HIGH-LIMIT
LIMIT (N.C.)
2
O
5
BLOWER RELAY COIL
(BOARD CIRCUIT)
SPARK
TOGGLE SWITCH
LIGHT
BK
G
W
L1
NOTE:
IF ANY OF THE ORIGINAL WIRES AS SUPPLIED WITH THE APPLIANCE
MUST BE REPLACED. IT MUST BE REPLACED WITH 18. GA STRANDED
105°C WIRE OR ITS EQUIVALENT.
N
SI UN DES CONDUCTEURS D'ORIGINE FOURNI AVEC L'APPAREIL DOIT
GND
ETRE REMPLACE UTILISER UN CONDUCTEUR 18 GA STRANDED 105°C
120 VOLTS AC
OU L'EQUIVALENT.
WIRING DIAGRAM
BLOWER MOTOR
M
BLOWER RELAY
120 VAC
Y W
24 V.
ECO NC
COLLECTOR
LIMIT
DISPLAY
GAS VALVE
PV
R
R
MV
M
SENSE
W
O
HIGH VOLTAGE
SPARK
WHITE
120 VOLTS
15
15