Ultra High Efficiency Water Heaters SERVICE MANUAL Troubleshooting Guide and Instructions for Service (To be performed ONLY by qualified service providers) Models Covered by This Manual: eF Series® Ultra High Efficiency Models: EFR160T120*(EN,SX) EF60T125(E)*(N,X)(A)(2) EF60T150(E)*(N,X)(A)(2) EF60T199(E)*(N,X)(A)(2) EF100T150(E)*(N,X)(A)(2) EF100T199(E)*(N,X)(A)(2) EF100T250(E)*(N,X)(A)(2) EF100T300(E)*(N,X)(A)(2) EF100T399(E)*(N,X)(A)(2) (*) Denotes Warranty Years Manual 45817C Save this manual for f
The Bradford White Ultra High Efficiency Water Heaters Table of Contents Page 2 eF Service Procedure Introduction 3 --- How to use this manual 4 --- Tool required for service 4 --- Features 5 --- Specifications 6 --- Sequence of Operation 10 --- Troubleshooting 16 --- Thermostat Circuit, Testing & Replacement 35 I Combustion System Testing and Replacement 43 II Burner Tube Inspection & Replacement 49 III Gas Valve Replacement 51 IV Blower Testing and Replacement 52 V E
Introduction The Bradford White eF Series® Ultra High Efficiency Water Heater is designed to deliver a remarkable thermal efficiency rating in a quiet running unit with venting options that allow for installation flexibility. Several technologically advanced design features are incorporated in the design that will require additional knowledge on the part of the qualified service provider.
How to Use This Manual It is intended for this manual to be used by qualified service personal for the primary purpose of troubleshooting analysis and repair of the Bradford White eF Series ® Ultra High Efficiency Water Heater. Understanding the sequence of operation section of this manual will contribute greatly to troubleshooting this product. An “Installation Check List” is shown towards the end of this manual.
Features Features of Honeywell Integrated Control System Attractive digital water heater display on control panel for setting and displaying the temperature setpoint. Pressing temperature UP and DOWN buttons changes the temperature setpoint. Same water heater display used on all models. Temperature format may be displayed in °F or °C. Single control board with plug in wiring controls temperature, ignition, and blower operation. Reduced number of parts for servicing and wiring.
Specifications Recovery GPH at Degree Rise Model No Input Rate BTU/h 1st Hr Del Gal @ 100°F Rise 40°F 100°F 140°F EFR-1-60T-120 EF60T125 EF60T150 EF60T199 EF100T150 EF100T199 EF100T250 EF100T300 EF100T399 120,000 125,000 150,000 199,999 150,000 199,999 250,000 300,000 399,999 180 187 211 265 250 309 364 405 521 345 363.6 422.7 557.6 450.5 597 734.8 836.4 1,127 138 145.5 169.1 223 180.2 238.8 293.9 334.5 451 99 103.9 120.
Specifications Hot Surface Ignition System Power supply Approved Gas Type Dedicated 120 VAC, 60 Hz, 15A, GFI Minimum 1" NPT for EF100T399, all others ¾" NPT (schedule 40 black iron pipe recommended) Natural or Propane. Unit must match gas type supplied. Gas Pressure (Nat & L.P.) 14.0" W.C. maximum static, 4.5" W.C. minimum running (recommend 7.0" W.C. min running) Venting System Power vent, balanced direct vent or unbalanced direct vent.
Specifications Honeywell Integrated Control System Power supply Approved Gas Type Dedicated 120 VAC, 60 Hz, 15A Minimum ¾" NPT (schedule 40 black iron pipe recommended) Natural or Propane. Unit must match gas type supplied. Gas Pressure (Nat & L.P.) 14.0" W.C. maximum static, 4.5" W.C. minimum running (recommend 7.0" W.C. min running) Venting System Power vent, balanced direct vent or unbalanced direct vent.
Specifications Vent Tables Balanced Direct Vent Systems PVC, CPVC Power Vented Systems PVC, CPVC Total length of intake piping and exhaust piping added together must not exceed “Maximum Combined Length” Shown below Total length of exhaust piping must not exceed “Maximum Vent Length” Shown below Maximum Combined Length (feet) Maximum Vent Length (feet) Model Number 2" 3" 4" Model Number 2" 3" 4" EFR-1-60T120 60' 120' 170' EFR-1-60T120 60' 120' 170' EF60T125, EF100T150 N/A 120' 170'
Sequence of Operation For models prior to CF serial numbers For models prior to CF serial numbers 1 Thermostat calls for heat. -Prior to energizing blower, ignition module checks safety circuits for normal switch positions: a) Vent temp switch normally closed. b) Intake pressure switch normally closed. c) Exhaust pressure switch normally open. If the vent temp switch is open, the control waits indefinitely for temp switch to close (green light stays on).
Sequence of Operation For models prior to CF serial numbers For models prior to CF serial numbers Lockout Conditions If normally closed pressure switch contacts open during burner operation, gas valve closes, burner shuts off. Blower restarts after 30 seconds and runs 5 minutes to wait for pressure switch to close. If not, locks out. The system will go into lock out mode for the following reasons: - Pressure switches stuck open or closed. a) Check for exhaust or intake obstructions.
Sequence of Operation For models starting with CF serial numbers and later. For models starting with CF serial numbers and later. 1 Thermostat calls for heat. Prior to energizing blower, ignition module checks to make sure the vent temperature switch is in the normally closed position. If the vent temperature switch is open, the control waits indefinitely for the temperature switch to close. 2 Blower energizes, pressure switch contacts are normally closed.
Sequence of Operation For models starting with CF serial numbers and later. For models starting with CF serial numbers and later. Lockout Conditions Lockout conditions: The system will go into lock out mode for the following reasons: Blocked vent pressure switch contacts open: Check for obstruction in exhaust pipe and vent terminal. Check for blocked condensate trap or drain line. In cold climates, make sure drain is not frozen.
Sequence of Operation For models with Honeywell Integrated Control System w/ Direct Spark Ignition Honeywell Integrated Control System w/ Direct Spark Ignition 1 Thermostat calls for heat. 2 Combustion blower starts. 3 Blower pre-purge period of 30 seconds. 4 Trial for Ignition. (5 seconds, 3 trials). Flame establishing period (3 seconds), gas valve opens, sparks from spark rod to burner surface to ignite the gas. Burner on, flame proving period (2 seconds). Requires a minimum of 0.
Sequence of Operation For models with Honeywell Integrated Control System w/ Direct Spark Ignition Honeywell Integrated Control System w/ Direct Spark Ignition 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.
Troubleshooting System Observation For models with Hot Surface Ignition Is front panel power switch light on, indicating power? N WARNING 120 volt potential exposure. Use caution making voltage checks to avoid personal injury. Position front panel power switch to “ON” position. Y Is there 120VAC across switch? (see photo at right) Power Switch Y Light burned out, replace switch. N Is there 120VAC Y across terminal block? (see photo at right) Terminal Block Repair/replace wire harness to switch.
Troubleshooting LED status & probable cause For models with Hot Surface Ignition Determine failure mode by observing flashing LED status on ignition module. LED status and probable cause shown below. * Denotes conditions that may require the water heater to be isolated from the vent system to determine root cause. LED STATUS Only power light is on and water heater will not function. Probable Cause* Exhaust pressure switch.
Troubleshooting System Observation For models with Direct Spark Ignition Water Heater Fault: Water heater does not operate Display Error Code: Water heater display does not operate - blank display Check main power supply to water heater - fuse, circuit breaker, plug receptacle, line cord or wiring to water heater. WARNING 120 volt potential exposure. Use caution making voltage checks to avoid personal injury.
Troubleshooting System Observation For models with Direct Spark Ignition WARNING 120 volt potential exposure. Use caution making voltage checks to avoid personal injury. From previous page CAUTION Use caution not to damage connectors when making voltage measurements or jumping terminals Does combustion blower operate? Error code #29 on display. Refer to Control Board illustration.
Troubleshooting Accessing Service Mode on Control Display For models with Honeywell Integrated Control The display has a “service mode” for changing the maximum setpoint and accessing information in aiding servicing of the water heater. This procedure is for service and installation personnel only. To enter the Service Mode, follow the steps illustrated below: Step 1: Press “Select” and “Temperature Up” buttons together and hold for 3 seconds until “Max Setpoint” is shown in the display.
Troubleshooting Accessing Service Mode on Control Display For models with Honeywell Integrated Control 1. Max Setpoint (Display/Change) Max Setpoint value in Water Heater Display Max Setpoint °F idle Status Operational & SELECT SET 2. Tank Sensor Temperature Displayed Water Temperature Average. °F Water Temp idle Status Operational SELECT SET 3.
Troubleshooting Accessing Service Mode on Control Display For models with Honeywell Integrated Control 4. Setpoint (Display/Change) °F setpoint idle Status Operational SELECT SET 5. °F/°C (Display/Change) °F °F/C° setpoint idle Status Operational SELECT SET 6.
Troubleshooting Accessing Service Mode on Control Display For models with Honeywell Integrated Control 7. Software Version (Display only) Soft idle Status Operational & SELECT 8. SET Error Code History (Displays if there are present error codes or up to 10 previous error codes). Water Heater Display will show a “--“ if there are no error codes.
Troubleshooting Accessing Service Mode on Control Display For models with Honeywell Integrated Control Step 2: Press “Set” button to enter setting mode. “Max Setpoint” will flash to indicate setting mode. "Max Setpoint" Flashes °F Max Setpoint idle Status Operational % SET SELECT Step 3: Press the “UP” or “DOWN” buttons to change the maximum setpoint value. This will limit the maximum setpoint the user can select. Note: The maximum setpoint is approximately 180°F.
Troubleshooting Accessing Service Mode on Control Display For models with Honeywell Integrated Control Step 5: 30 Seconds after the last button press, the Water Heater Display will go back to “User Mode”. It will read “Max Setpoint” without showing a temperature value if the temperature setpoint is at the maximum setting. The Water Heater Display can be set back to the “User Mode” immediately by pressing both the “Temperature Up” and “Select” buttons together for 3 seconds.
Troubleshooting Accessing Service Mode on Control Display For models with Honeywell Integrated Control To Display Flame Sense Current of the Pilot Flame Sensor: The pilot flame sense current is available only when the burners are in operation. Step 1: Make sure the status displays “Heating” or draw enough hot water to start the burners. Step 2: Enter the “Service Mode” described previously. Step 3: Press the “Select” button until a number value is displayed with “Flame Current” to the right of the number.
Troubleshooting Accessing Service Mode on Control Display For models with Honeywell Integrated Control Step 2: Press the “Set” button to enter the setting mode. “Setpoint” will flash in the water heater display. °F setpoint idle Status Operational SELECT SET Step 3: To raise the temperature setpoint, press the “Temperature Up” button until the desired temperature is shown on the water heater display.
Troubleshooting Accessing Service Mode on Control Display For models with Honeywell Integrated Control Step 5: When the desired setpoint is reached on the water heater display, press the “Set” button to confirm the new setpoint. “Setpoint” stops flashing in the water heater display.
Troubleshooting Accessing Service Mode on Control Display For models with Honeywell Integrated Control Step 3a: Press “Temperature Up” button to change temperature format to °C °C °F/C° idle Status Operational SELECT SET % Step 3b: Press “Temperature Down” button to change temperature format to °F °F °F/C° idle Status Operational SELECT SET Step 4: Press “Set” button to confirm °F or °C format.
Troubleshooting Accessing Service Mode on Control Display For models with Honeywell Integrated Control Step 5: Pressing “Select” button will return display to setpoint in format selected (°F or °C) immediately °F idle Status Operational Lower Sensor SELECT SET Error Codes and Error History Display: If there is an operating problem with the water heater, an error code number will appear on the water heater display with “Service Needed” to the right of the “Status” indicator.
Troubleshooting Accessing Service Mode on Control Display For models with Honeywell Integrated Control To view previous error codes: Step 1: In “Service Mode press the “Select” button until the next display after the “Software Version”. If there are no current error codes, the display will show -- . °F idle Status Operational SELECT SET Step 2: Press the “Temperature Down” button to select the error code index, starting with the most recent error code “10”.
Troubleshooting Accessing Service Mode on Control Display For models with Honeywell Integrated Control Step 4: Press the “Temperature Down” button to change to the previous code index, code #9. idle Status Operational SELECT SET % Step 5: Press the “Select” button for code index #9 to view if there are any code numbers.
Troubleshooting Error Code Definitions For models with Honeywell Integrated Control ERROR CODE DEFINITIONS If the water heater has an operating problem, there will be a number in the water heater display with “Service Needed” shown below the error code number. Note the error code and the definition in the chart below. This label appears on the control box under the water heater display. The following sections will provide instructions for servicing each error code.
Troubleshooting Resetting Error Codes For models with Honeywell Integrated Control WARNING The following procedure is for service and installation personnel only. Resetting lockout conditions without correcting the malfunction can result in a hazardous condition.
SERVICE PROCEDURE EF-I Thermostat Circuit Testing and Replacement For models with Honeywell Integrated Control System IMPORTANT NOTE: This procedure assumes a cool tank Condition: Water Heater Not Operating Display shows error code “32” ( Sensor Reading Faulty) WARNING 120 volt potential exposure. Use caution making voltage checks to avoid personal injury.
SERVICE PROCEDURE EF-I Thermostat Circuit Testing and Replacement For models with Honeywell Integrated Control System Condition: Water Heater Not Operating Display shows error code “65” High Water Temperature (over 200 °F) (Continued from previous page) WARNING Do not operate water heater without verifying that the overheating condition has been corrected. Once cause of overheating condition has been diagnosed and corrected, the control may be reset Reconnect and switch on power to the water heater.
SERVICE PROCEDURE EF-I Thermostat Circuit Testing and Replacement For models with Hot Surface Ignition IMPORTANT NOTE: This procedure assumes a cool tank WARNING 120 volt potential exposure. Use caution making voltage checks to avoid personal injury. Rotate temperature dial to highest setting. Refer to ignition module illustration, Is there 24VAC between P3(7) and P3(8)? Y OK, thermostat is calling for heat. N IGNITION MODULE Thermostat not calling Red Wire (N.O.) Turn off power to heater.
SERVICE PROCEDURE EF-I Thermostat Circuit Testing and Replacement APPENDIX - A Sensor Resistance at Various Temperatures Be Careful When Making Voltage Measurements or Jumping Terminals Not to Damage or Deform Connectors or Connector Pins. Draw Water From The T&P Valve. Compare Temperature With Temperature Ohms Chart Below. Example: If temperature of sensor is 84°F, then the resistance through the sensor would be 8449 (see shaded area). NOTE: Sensor resistance increases as the temperature falls.
SERVICE PROCEDURE EF-I Thermostat Circuit Testing and Replacement For models with Hot Surface Ignition WARNING 120 volt potential exposure. Use caution making voltage checks to avoid personal injury. Thermostat circuit. (continued from page 37) Check AC source to determine why there is no power. Replace ignition module.
SERVICE PROCEDURE EF-I Thermostat Circuit Testing and Replacement Thermostat Board Replacement Procedure (Hot Surface Ignition) Step 1. Position main power switch to “OFF” Step 2. Disconnect (unplug) water heater from 120 volt power source. Step 3. Un-latch and remove top surround cover from top of heater. Step 4. Locate thermostat board on control panel. (see photo at right) WARNING 120 volt potential exposure. Isolate the appliance and reconfirm power is disconnected using a multi-meter.
SERVICE PROCEDURE EF-I Thermostat Circuit Testing and Replacement Thermostat Potentiometer Replacement Procedure WARNING 120 volt potential exposure. Isolate the appliance and reconfirm power is disconnected using a multi-meter. Step 1. Position main power switch to “OFF” Step 2. Disconnect (unplug) water heater from 120 volt power source. Step 3. Un-latch and remove top surround cover from top of heater.
SERVICE PROCEDURE EF-I Thermostat Circuit Testing and Replacement Thermostat Sensor (Thermister) Replacement Procedure Step 1. Position main power switch to “OFF” Step 2. Disconnect (unplug) water heater from 120 volt power source. Step 3. Hot Surface Ignition Models: Drain water heater down to a point below the top of the tank. Step 4. Un-latch and remove top surround cover from top of heater. Step 5. Fold back insulation just in front of burner to expose temperature sensor (see photo below).
SERVICE PROCEDURE EF-II Combustion System Testing and Replacement Observe burner operation through the sight glass located on the combustion insert mounting flange. Normal burner operation should ignite smoothly, without evidence of coughing or huffing upon ignition. The burner flame should be a blue flame near the burner surface in a uniform flame pattern. Occasional yellow or white streaks are normal.
SERVICE PROCEDURE EF-II Combustion System Testing and Replacement Observe burner operation through the sight glass located on the combustion insert mounting flange. Normal burner operation should ignite smoothly, without evidence of coughing or huffing upon ignition. The burner flame should be a blue flame near the burner surface in a uniform flame pattern. Occasional yellow or white streaks are normal. For models with Hot Surface Ignition System WARNING 120 volt potential exposure.
SERVICE PROCEDURE EF-II Combustion System Testing and Replacement Observe burner operation through the sight glass located on the combustion insert mounting flange. Normal burner operation should ignite smoothly, without evidence of coughing or huffing upon ignition. The burner flame should be a blue flame near the burner surface in a uniform flame pattern. Occasional yellow or white streaks are normal.
SERVICE PROCEDURE EF-II Combustion System Testing and Replacement Observe burner operation through the sight glass located on the combustion insert mounting flange. Normal burner operation should ignite smoothly, without evidence of coughing or huffing upon ignition. The burner flame should be a blue flame near the burner surface in a uniform flame pattern. Occasional yellow or white streaks are normal. For models with Direct Spark System WARNING 120 volt potential exposure.
SERVICE PROCEDURE EF-II Combustion System Testing and Replacement WARNING Heater components may be HOT when performing the following steps in this procedure. Take necessary precaution to prevent personal injury. Combustion System Removal Procedure Step 1. Position main power switch to “OFF”. Step 2. Disconnect (unplug) water heater from 120 volt power source. Step 3. Turn off gas supply to water heater. Step 4. Un-latch and remove surround cover from top of heater. Step 5.
SERVICE PROCEDURE EF-II Combustion System Testing and Replacement Combustion System Replacement Procedure Step 1. Fully inspect burner mounting insert gasket for the following: a) Tears d) Dirt or debris b) Missing material e) Other imperfections that would inhibit proper seal c) Cracks If gasket is NOT affected by any of the above, gasket replacement is not required. Step 2. Install combustion assembly using new gasket or fully inspected gasket from step 1.
SERVICE PROCEDURE EF-III Burner Tube Inspection and Replacement WARNING Heater components may be HOT when performing the following steps in this procedure. Take necessary precaution to prevent personal injury. Burner Tube Removal Procedure Step 1. Position main power switch to “OFF”. Step 2. Disconnect (unplug) water heater from 120 volt power source. Step 3. Turn off gas supply to water heater. Step 4. Un-latch & remove surround cover from top of heater. Step 5.
SERVICE PROCEDURE EF-III Burner Tube Inspection and Replacement WARNING Heater components may be HOT when performing the following steps in this procedure. Take necessary precaution to prevent personal injury. Burner Tube Inspection Step 1. Inspect burner tube as follows (BSI ceramic fiber mesh burner, water heaters prior to serial number “CK”) : a) Visually inspect ceramic fiber mesh, mesh should be uniform in appearance without large gaps, tears or fraying.
Service Procedure EF-IV Gas Valve Replacement Gas Valve Replacement Procedure WARNING 120 volt potential exposure. Isolate the appliance and reconfirm power is disconnected using a multi-meter. Step 1. Position main power switch to “OFF”. Step 2. Disconnect (unplug) water heater from 120 volt power source. Step 3. Turn off gas supply to water heater. Step 4. Un-latch & remove surround cover from top of heater. Step 5.
Service Procedure EF-V Blower Testing and Replacement Is there 120VAC across the white and black wires at the terminal block ? (see photo at right) Does blower energize? Y (For Direct Spark Ignition models, ensure control display shows “Heating”, raise temperature setpoint if necessary) Refer to ignition module/control board illustration.
Service Procedure EF-V Blower Testing and Replacement Blower Replacement Procedure WARNING 120 volt potential exposure. Isolate the appliance and reconfirm power is disconnected using a multi-meter. Step 1. Position main power switch to “OFF”. Step 2. Disconnect (unplug) water heater from 120 volt power source. Step 3. Turn off gas supply to water heater. Step 4. Un-latch & remove surround cover from top of heater. Step 5. Disconnect wire harness from blower. Step 6.
Service Procedure EF-VI Exhaust Pressure Switch Testing and Replacement For serial numbers prior to “CF” Sequence of operation: With the thermostat calling for heat, prior to energizing blower, the ignition module checks the exhaust pressure switch for normal switch position of normally open. If the exhaust pressure switch contacts are closed (not in normal position), the ignition module waits 45 seconds for the pressure switch contacts to open.
Service Procedure EF-VI Exhaust Pressure Switch Testing and Replacement For serial numbers prior to “CF” Check Collector Pressure Check exhaust collector pressure at the exhaust collector pressure tap location (see illustration below). Is there positive pressure equal to or greater than pressure switch settings below? EXHAUST PRESSURE SWITCH SETTINGS EF(60,100)T199 +2.58" W.C. EF100T150 +1.50" W.C.(see note 1) EF60T150,EF100T250 +1.22" W.C. EF60T125 +2.08" W.C. EF100T300 +0.55" W.C.
Service Procedure EF-VI Exhaust Pressure Switch Testing and Replacement For serial numbers prior to “CF” Exhaust Pressure Switch Replacement Procedure Step 1. Position main power switch to “OFF” position. Step 2. Loosen adhesive backed rubber escutcheon from service panel access cover and slide escutcheon back along exhaust pipe to allow for removal of cover. Step 3. Remove screws from service panel access cover (¼" nut driver) and remove cover from heater. (see photos at right) Step 4.
Service Procedure EF-VI Blocked Vent Pressure Switch Testing and Replacement for serial number “CF” and later Sequence of operation: The blocked vent pressure switch monitors the pressure in the exhaust tube. The switch contacts are normally closed and will not open unless there is a blockage in the exhaust venting or terminal (snow, ice, debris).
Service Procedure EF-VI Blocked Vent Pressure Switch Testing and Replacement for serial number “CF” and later Check Exhaust Tube Pressure With monometer, take a reading at the exhaust tube pressure tap location. N Is value negative (-) or slightly postitive (see illustration below). Y Is exhaust venting system blocked or obstructed? Also check condensate elbow and drain. Y Clear obstruction. Determine cause and correct.
Service Procedure EF-VI Blocked vent Switch Testing and Replacement For serial number “CF” or later Exhaust Pressure Switch Replacement Procedure Step 1. Position main power switch to “OFF” position. Step 2. Loosen adhesive backed rubber escutcheon from service panel access cover and slide escutcheon back along exhaust pipe to allow for removal of cover. Step 3. Remove screws from service panel access cover (¼" nut driver) and remove cover from heater. (see photos at right) Step 4.
Service Procedure EF-VII Hot Surface Igniter Testing and Replacement Hot surface Igniter Testing Procedure WARNING 120 volt potential exposure. Use caution making voltage checks to avoid personal injury.
Service Procedure EF-VII Hot Surface Igniter Testing and Replacement Hot surface Igniter Replacement Procedure Step 1. Position main power switch to “OFF” Step 2. Disconnect (unplug) water heater from 120 volt power source. Step 3. Un-latch & remove surround cover from top of heater. Step 4. Fold back insulation in front of combustion assembly to expose hot surface igniter. (see photo at right) Step 5. Disconnect igniter wire leads from ignition module. Step 6.
Service Procedure EF-VIII Flame Sensor Testing and Replacement WARNING Flame Sensor Testing Procedure Refer to illustration below, is there a minimum of 1 micro amp during 1.5 second flame proving period? Refer to ignition module/control board illustration.(24 volts should maintain beyond the 1.5 second flame proving period.
Service Procedure EF-VIII Flame Sensor Testing and Replacement Flame Sensor Replacement Procedure Step 1. Position main power switch to “OFF” Step 2. Disconnect (unplug) water heater from 120 volt power source. Step 3. Un-latch & remove surround cover from top of heater. Step 4. Fold back insulation in front of combustion assembly to expose flame sensor. (see photo at right) Step 5. Disconnect wire lead from flame sensor. Step 6.
SERVICE PROCEDURE EF-IX Spark Rod Gap Adjustment and Replacement Spark Rod Gap Inspection and Adjustment WARNING Spark gap must be set to 3/16" to 1/4". Failure to set and verify proper spark gap may result in a delayed ignition resulting in damage to the water heater. Step 1. Remove combustion system as described in “Combustion System Removal Procedure”. Step 2. Measure spark gap between the spark rod and burner tube. Acceptable spark gap is between 3/16" - 1/4" (see photo below). Step 3.
SERVICE PROCEDURE EF-IX Spark Rod Gap Adjustment and Replacement Spark Rod Replacement Procedure Step 1. Position main power switch to “OFF” Step 2. Disconnect (unplug) water heater from 120 volt power source. Step 3. Un-latch & remove surround cover from top of heater. Step 4. Fold back insulation in front of combustion assembly to expose spark rod. (see photo at right) Step 5. Disconnect wire lead from spark rod. Step 6.
Service Procedure EF-X Ignition Module/Control Board Replacement Ignition Module Replacement Procedure WARNING 120 volt potential exposure. Isolate the appliance and reconfirm power is disconnected using a multi-meter. Step 1. Position main power switch to “OFF”. Step 2. Disconnect (Unplug) water heater from 120 Volt power source. Step 3. Un-latch & remove surround cover from top of water heater. Step 4. Locate Ignition module on control panel inside surround area.
Service Procedure EF-X Ignition Module/Control Board Replacement Control Board Replacement (Honeywell Integrated Control w/ Direct Spark Ignition) Step 1. Position main power switch to “OFF” Step 2. Disconnect (unplug) water heater from 120 volt power source. Step 3. Un-latch and remove top surround cover from top of water heater. Step 4. Locate control board. WARNING 120 volt potential exposure. Isolate the appliance and reconfirm power is disconnected using a multi-meter.
Service Procedure EF-XI Transformer Replacement Transformer Replacement Procedure Step 1. Position main power switch to “OFF”. Step 2. Disconnect (Unplug) water heater from 120 Volt power source. Step 3. Un-latch & remove surround cover from top of water heater. Step 4. For Hot Surface Ignition models, refer to ignition module illustration below, Disconnect wire harness P1 labeled “PRIMARY” and P2 labeled “SECONDARY” from ignition module. Step 5.
Service Procedure EF-XII Intake Pressure Switch Testing and Replacement Used on EF water heaters prior to “CF” serial number. Notice: The intake pressure switch is not used on serial number “CF” and later. Does Blower Energize? Is there continuity through the normally N closed intake pressure switch? (see photo at right) N Y WARNING 120 volt potential exposure. Use caution making voltage checks to avoid personal injury. Replace intake pressure switch.
Service Procedure EF-XII Intake Pressure Switch Testing and Replacement Used on EF water heaters prior to “CF” serial number. Intake Pressure Switch Replacement Procedure WARNING 120 volt potential exposure. Isolate the appliance and reconfirm power is disconnected using a multi-meter. Step 1. Position main power switch to “OFF”. Step 2. Disconnect (Unplug) water heater from 120 Volt power source. Step 3. Un-latch & remove surround cover from top of water heater. Step 4.
Service Procedure EF-XIII Vent Safety Switch Testing and Replacement Sequence of operation: For Hot Surface Ignition models, with the thermostat calling for heat, prior to energizing blower, the ignition module checks the vent safety switch for normal switch position of normally closed. If the vent safety switch contacts are open, (not in normal position), the ignition module waits indefinitely for contact to close, The vent safety switch must be manually reset to close the switch contacts.
Service Procedure EF-XIII Vent Safety Switch Testing and Replacement Vent Safety Switch Replacement Procedure Step 1. Position main power switch to “OFF”. Step 2. Loosen adhesive backed rubber escutcheon from service panel access cover and slide escutcheon back along exhaust pipe to allow for removal of cover (see photos at right). Step 3. Remove screws from service panel access cover (¼" nut driver) and remove cover from heater (see photos at right) Step 4.
Service Procedure EF-XIV Anode/Flue Baffle Inspection and Replacement Disassembly Procedure for Access to Anodes & Flue Baffles WARNING Heater components may be HOT when performing the following steps in this procedure. Take necessary precaution to prevent personal injury. WARNING 120 volt potential exposure. Isolate the appliance and reconfirm power is disconnected using a multi-meter. Step 1. Position main power switch to “OFF”. Step 2. Disconnect (Unplug) water heater from 120 Volt power source.
Service Procedure EF-XIV Anode/Flue Baffle Inspection and Replacement Anode inspection and replacement WARNING Heater components and stored water may be HOT when performing the following steps in this procedure. Take necessary precaution to prevent personal injury. Step 1. Turn off water supply and drain water heater. Step 2. Disassemble water heater per “Disassembly Procedure for Access to Andoes & Flue Baffles”. Step 3. Locate and remove anode rods from heater (1-1/16 hex socket). Step 4.
Service Procedure EF-XIV Anode/Flue Baffle Inspection and Replacement Flue baffle inspection and replacement WARNING Heater components may be HOT when performing the following steps in this procedure. Take necessary precaution to prevent personal injury. Step 1. Disassemble heater per “Disassembly Procedure for Access to Anodes & Flue Baffles”. Step 2. Remove flue baffles from heater (pliers) (8 two inch baffles & 2 four inch baffles). Step 3. Visually inspect flue baffles.
Service Procedure EF-XIV Powered Anode Replacement for EF100T399 only Powered Anode Replacement EF100T399 models only WARNING Heater components may be HOT when performing the following steps in this procedure. Take necessary precaution to prevent personal injury. The powered anode control module is located on the right vertical side of the control panel inside the surround panel. The control has a LED indicator light to show the status of operation.
Service Procedure EF-XIV Anode/Flue Baffle Inspection and Replacement Collector Cover Installation Procedure Step 1. Remove old silicone from top surface of collector flange and collector cover. Step 2. Apply ¼" bead of Ultra Copper Silicone around entire collector flange surface. Allow caulk to “cure” for 10 minutes. Step 3. Carefully reinstall collector cover, tighten screws evenly. Step 4. Allow a minimum of 6 hours before putting heater back in service.
Water Heater Installation Check List Product Handling - Carefully uncrate the heater. Move in place with a hand truck (Do not use the venting pipes for handles). Electrical Requirements - Make sure there is 120 volts line voltage. Line voltage must be properly polarized. Adequate ground supplied to the heater. Venting Requirements - All venting must stay within the required lengths and diameter (see table below). Proper support of the venting pipe is a MUST (every 5ft vertical and 3ft horizontal).
eF Series Heater Service Report R Date Service Provider Model Number Phone Number Serial Number Venting (PVC, CPVC): Vent size 3" or 4" Intake 90's (qty) Intake 45's (qty) Length of straight pipe (intake) Exhaust 90's (qty) Exhaust 45's (qty) Length of straight pipe (exhaust) Gas Line: Gas Pressure: Venturi: Size & material Static Setting from Bottom in Turns Distance from meter to water heater Running Inlet Manifold Electrical: Line Voltage Low Voltage Igniter Resistance: Polarity Fl
Parts List Models prior to “CF” serial number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Combustion Surround Assy.
Parts List Models prior to “CF” serial number AA BB CC DD EE FF GG JJ Latch Assy Screw 8-32 x ½ RHCR Ignition Control Assy Jacket Head Main Power Switch Potentiometer Combustion Surround Surround Base Customer must specify complete model number and serial number when ordering service parts. 1A 2A 3A 4A 5A Combustion Surround Assy.
Parts List Models prior to “CF” serial number 1C 2C 3C 4C 5C 6C 7C Electronic Control Module Screw 8-32 x 1/2 Intake Pressure Switch Control Mounting Panel Thermostat PC Board Transformer 120VAC x 24VAC x 40VA Terminal 8C 9C 10C 11C 12C 13C 14C 15C 16C Terminal Strip Power Cord Control Wire Harness Thermostat Wire Harness Igniter Extension Wire Blower Wire Harness Power Switch Wire Harness Flame Sensor Wire Harness Rectifier Harness Customer must specify complete model number and serial number when or
Parts List For models with “CF” serial or later. 1 2 3 4 5 6 7 8a 8b 9 10 11 12 13 14 20 Combustion Surround Assy.
Parts List For models with “CF” serial or later. AA BB CC DD EE FF GG JJ Latch Assy Screw 8-32 x ½ RHCR Ignition Control Assy Jacket Head Main Power Switch Potentiometer Combustion Surround Surround Base Customer must specify complete model number and serial number when ordering service parts. 2A 3A 4A Combustion Surround Assy.
Parts List For models with “CF” serial or later.
Parts List For models with Direct Spark Ignition 1 3 4 2 7 8 6 9 5 31 10 11 30 33 19 15 29 28 17 20 16 1 2 3 4 5 6 7 8 9 10 Combustion Surround Assembly Burner Assembly (specify model) 2nd Pass Top Collector Cover Screw 10-16 x 3/4 Vent Termination Elbow Thermostat Sensor Probe 11 12 13 14 Plastisert Nipple 1-½" NPT Plug Nipple T&P Relief Valve 15 16 17 18 19 20 21 22 23 24 25 26 Exhaust Pipe (PVC) w/Hose Barb Condensate Trap Elbow (specify model) Silicone Hose Outer Door Service Panel
Parts List For models with Direct Spark Ignition 1B 2B 3B 4B 5B 6B 7B 8B Latch Assy Screw 8-32 x ½ RHCR Ignition Control Assy Jacket Head Main power switch 4B 1B Honeywell Control Display Combustion Surround Surround Base 3B 7B 5B Customer must specify complete model number and serial number when ordering service parts.
Parts List For models with Direct Spark Ignition 2C 8C 4C 3C 5C 9C 10C 1C 11C 12C 6C 13C 7C 1C Control Panel 2C 3C 4C 5C 6C 7C 8C 9C 10C 11C 12C 13C Control Board Transformer 120VAC x 24VAC x 40VA Terminal Terminal Strip Power Cord Controller Wire Harness Transformer Primary Wire Harness Transformer Secondary Wire Harness Blower Wire Harness Power Switch Wire Harness Sensor Wire Harness High Voltage Spark Cable Customer must specify complete model number and serial number when ordering service
Glossary of Terms AC BTU/H CO CO2 DC DSI ECO GFI GPM HSI Hz LED NOx NPT PSI RPM VA VAC W.C.
Notes NOTES 90
Notes NOTES 90
Email parts@bradfordwhite.com techserv@bradfordwhite.com www.bradfordwhite.
