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Bradford-White Corp
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Water Heater
Bradford-White Corp
- page 92
Models:
EF100T150(E)*(N
EF100T199(E)*(N
EF100T250(E)*(N
EF100T300(E)*(N
EF100T399(E)*(N
EF60T125(E)*(N
EF60T150(E)*(N
EF60T199(E)*(N
EFR160T120*(EN
X)(A)(2)
1
92
92
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Contents
Main
SERVICE MANUAL
Ultra High Efficiency Water Heaters
The Bradford White
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NOTICE
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Ignition Module Specifications
IGNITION MODULE
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For models starting with CF serial numbers and later.
Ignition Module Specifications
IGNITION MODULE
For models starting with CF serial numbers and later.
System w/ Direct Spark Ignition
(Excluding EF100T399 model series)
System w/ Direct Spark Ignition
CONNECTION/WIRING DIAGRAM
CONNECTION DIAGRAM WIRING DIAGRAM
120 volt potential exposure. Use caution making voltage checks to avoid personal injury.
Power Switch Terminal Block
Replace ignition module. (see Ignition Module Replacement)
LED status & probable cause
For models with Direct Spark Ignition
Use caution not to damage connectors when making voltage measurements or jumping terminals
120 volt potential exposure. Use caution making voltage checks to avoid personal injury.
CONTROL BOARD
For models with Direct Spark Ignition
Use caution not to damage connectors when making voltage measurements or jumping terminals
120 volt potential exposure. Use caution making voltage checks to avoid personal injury.
CONTROL BOARD
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1. Max Setpoint (Display/Change)
2. Tank Sensor Temperature Displayed Water TemperatureAverage.
Max Setpoint value in Water Heater Display
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3. Flame Current of Burner Flame Sensor (Displays only in the Heating Cycle)
4. Setpoint (Display/Change)
5. F/C (Display/Change)
6. Differential (Display only - shows the differential of the thermostat)
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Step 4: Press Set button to confirm new Max Setpoint valueand stop setting mode.
"Max Setpoint" stops flashing
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Step 3a: Press Temperature Up buttonto change temperature format to C
Step 3b: Press Temperature Down button to change temperature format to F
Step 4: Press Set button to confirm F or C format. F/C will stop flashing
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Exiting Service Mode
Error Code Definitions
ERROR CODE DEFINITIONS
HONEYWELL INTEGRATED CONTROL ERROR CODE DISPLAY FOR EF MODEL SERIES
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IMPORTANT NOTE: This procedure assumes a cool tank
120 volt potential exposure. Use caution making voltage checks to avoid personal injury.
CAUTION Use caution not to damage connectors when making voltage measurements or jumping terminals
Condition: Water Heater Not Operating Display shows error code 32 ( Sensor Reading Faulty)
Serial Numbers including and AFTER GB13006174 and ALL EFR models (Excluding EF100T399 model series).
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IMPORTANT NOTE: This procedure assumes a cool tank
120 volt potential exposure. Use caution making voltage checks to avoid personal injury.
For models with Hot Surface Ignition
APPENDIX - A
Sensor Resistance at Various Temperatures
APPENDIX - B
Temperature Dial Resistance
Draw Water From The T&P Valve. Compare Temperature With Temperature Ohms Chart Below.
120 volt potential exposure. Use caution making voltage checks to avoid personal injury.
Thermostat Board Replacement Procedure
Thermostat Potentiometer Replacement Procedure
Thermostat Sensor (Thermister) Replacement Procedure
Direct Spark Ignition Models
Hot Surface Ignition Models
Volt meter set to OHM setting Meter probe Hot surface igniter CHECK IGNITER RESISTANCE
120 volt potential exposure. Use caution making voltage checksto avoid personalinjury.
For models with Hot Surface Ignition System
For models with Hot Surface Ignition System
120 volt potential exposure. Use caution making voltage checksto avoid personalinjury.
Spark Rod
Meter probe
Removing screw from inlet gas pressure tap will immediately allow gas to flow from pressure tap.
Serial Numbers including and AFTER GB13006174 and ALL EFR models
Flame Sense Rod
CHECK FLAME SENSE ROD MICROAMPS
Multimeter set to microamp (A) setting
Flame Sense Terminal
Serial Numbers including and AFTER GB13006174 and ALL EFR models
Combustion System Removal Procedure
Combustion System Replacement Procedure
Burner Tube Removal Procedure
Burner Tube Inspection
Burner Tube Replacement Procedure
Gas Valve Replacement Procedure
HOT SURFACE IGNITION MODELS
DIRECT SPARK IGNITION MODELS
Blower Replacement Procedure
Safety Circuit Trace
Check Collector Pressure
Exhaust Pressure Switch Replacement Procedure
Safety Circuit Trace
Blocked Vent Pressure Switch Testing and Replacement for serial number CF and later
WARNING
Check Exhaust Tube Pressure
Blocked Vent Pressure Switch Testing and Replacement for serial number CF and later
Exhaust Pressure Switch Replacement Procedure
Blocked vent Switch Testing and Replacement For serial number CF or later
Hot surface Igniter Testing Procedure
Hot surface Igniter Replacement Procedure
Note: Do not handle igniter element or allow foreign material to come in contact with element.
Flame Sensor Testing Procedure
terminal
Meter probe
Flame sensor terminal
Volt meter set to Micro amps setting (A)
Flame Sensor Replacement Procedure
Spark Rod Gap Inspection and Adjustment
Use caution while performing these steps to prevent stressing or cracking the ceramic insulator.
Spark Rod Replacement Procedure
Ignition Module Replacement Procedure
Control Board Replacement
Transformer Replacement Procedure
Ignition module
Thermostat board
Used on EF water heaters prior to CF serial number.
Notice: The intake pressure switch is not used on serial number CF and later.
Intake Pressure Switch Replacement Procedure
Used on EF water heaters prior to CF serial number.
WARNING
Vent Safety Switch Replacement Procedure
Disassembly Procedure for Access to Anodes & Flue Baffles
Note: EF100T399 models have only 1 anode rod under the 2nd pass collector cover.
Anode inspection and replacement
Flue baffle inspection and replacement
Powered Anode Replacement EF100T399 models only
Powered Anode Replacement for EF100T399 only
Collector Cover Installation Procedure
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Customer must specify complete model number and serial number when ordering service parts.