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- 1 Table of Contents
- 2 Introduction
- 3 Troubleshooting Chart
- 4 Thermocouple/Thermopile Testing and Replacement
- 5 Honeywell Gas Control Testing, Disassembly, and Replacement
- 6 Burner Operation Inspection, Adjustment, Cleaning and Replacement
- 7 Resettable Thermal Switch Testing and Replacement
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Flammable Vapor Ignition Resistant
Manual 238-51542-00B REV 10/18
Water Heaters
SERVICE
MANUAL
and Instructions for Service
Troubleshooting Guide
(To be performed ONLY by
qualified service providers)
Models Covered
by This Manual:
RG130T*(N,X)
RG140T*(N,X)
RG150T(N,X)
LG250H65*(N,X)
RG230S*(N,X)
RG230T*(N,X)
RG240S*(N,X)
RG240T*(N,X)
RG250H*(N,X)
RG250L*(N,X)
RG250S*(N,X)
RG250T*(N,X)
(*) Denotes Warranty Years
Save this manual for future reference
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Table of Contents
Related Manuals for Bradford White RG130T*N Series
Summary of Contents for Bradford White RG130T*N Series
- Page 1 Flammable Vapor Ignition Resistant Water Heaters SERVICE MANUAL Troubleshooting Guide and Instructions for Service (To be performed ONLY by qualified service providers) Models Covered by This Manual: RG130T*(N,X) RG140T*(N,X) RG150T(N,X) LG250H65*(N,X) RG230S*(N,X) RG230T*(N,X) RG240S*(N,X) RG240T*(N,X) RG250H*(N,X) RG250L*(N,X) RG250S*(N,X) RG250T*(N,X) (*) Denotes Warranty Years Manual 238-51542-00B REV 10/18 Save this manual for future reference...
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Page 2: Table Of Contents
The Bradford White ® Page Service Procedure Introduction - - - Troubleshooting Chart - - - Inner Door Gasket Removal, Inspection, and Replacement RG-I Thermocouple/Thermopile Testing and Replacement RG-II Pilot Assembly Inspection Cleaning and Replacement RG-III Piezo Igniter, Electrode Testing and Replacement... -
Page 3: Introduction
The following information will instruct service professionals on the function, proper diagnosis and repair of water heaters employing the Bradford White DEFENDER Safety System. How the Safety System Works During normal operation, air for combustion is drawn into the water heater through the opening in the jacket. -
Page 4: Troubleshooting Chart
White Rodgers Gas Control Troubleshooting Chart Flammable Vapor Ignition Resistant Water Heaters Service Symptom Probable Cause Corrective action Procedure 1. No incoming gas or too low 1. See Service 1. Turn on gas supply and/or check gas pressure. Procedure RG-V, line pressure. - Page 5 White Rodgers Gas Control Troubleshooting Chart Flammable Vapor Ignition Resistant Water Heaters Service Symptom Probable Cause Corrective action Procedure 1. Verify adequate combustion air is available to the unit. Check and clear Jacket slot openings of 1. Insufficient combustion air any dirt, dust, restrictions or 1.
- Page 6 Honeywell V1 Gas Control Troubleshooting Chart Flammable Vapor Ignition Resistant Water Heaters Observe green LED indicator on Gas Control. Status flash codes are displayed with a three second pause before repeating. Check and repair the system as noted in the troubleshooting table below.
- Page 7 Honeywell V1 Gas Control Troubleshooting Chart Flammable Vapor Ignition Resistant Water Heaters Observe green LED indicator on Gas Control. Status flash codes are displayed with a three second pause before repeating. Check and repair the system as noted in the troubleshooting table below.
- Page 8 Honeywell V2 Gas Control Troubleshooting Chart Flammable Vapor Ignition Resistant Water Heaters Observe colored LED indicator on Gas Control. Status flash codes are displayed with a three second pause before repeating. Check and repair the system as noted in the troubleshooting table below.
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Page 9: Inner Door Gasket Removal, Inspection, And Replacement
SERVICE PROCEDURE RG-I Inner Door/Gasket Removal, Inspection, and Replacement Inner Door Removal Procedure Step 1. Rotate knob of the combination thermostat/gas valve to the “OFF” position. Step 2. Remove outer jacket burner access door. Step 3. Inner Door Removal. a) Disconnect resettable thermal switch wire leads (leading from gas control/gas valve). - Page 10 SERVICE PROCEDURE RG-I Inner Door/Gasket Removal, Inspection, and Replacement Installation of Inner Door with Gasket Step 5. Clean any residual gasket residue or other WARNING debris from combustion chamber surface Stripped fastener connections may allow before installing the inner door/gasket for seal breach of inner door.
- Page 11 SERVICE PROCEDURE RG-I Inner Door/Gasket Removal, Inspection Replacement and Reinstallation Step 8. Firmly place right side inner door flange against the left side inner door flange and secure with (2) hex drive screws from step 3c. DO NOT OVER TIGHTEN SCREWS. Step 9.
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Page 12: Thermocouple/Thermopile Testing And Replacement
SERVICE PROCEDURE RG-II Thermocouple/Thermopile Testing and Replacement CLOSED CIRCUIT THERMOCOUPLE TESTING (White Rodgers Control) Step 1. Closed circuit testing is the preferred method for testing thermocouple. Following the lighting instruction label on the heater, proceed to light the pilot and allow to operate for three minutes. If the pilot will not stay lit, hold the pilot button (located on the combination thermostat/gas valve) down during this test. - Page 13 SERVICE PROCEDURE RG-II Thermocouple/Thermopile Testing and Replacement OPEN CIRCUIT THERMOCOUPLE TESTING (White Rodgers Gas Valve) Step 1. Disconnect thermocouple from combination thermostat/gas valve. Step 2. Using a multimeter capable of measuring millivolts, connect one alligator clip to the end ball or contact portion of the thermocouple, and the other alligator clip to copper portion of the thermocouple.
- Page 14 SERVICE PROCEDURE RG-II Thermocouple/Thermopile Testing and Replacement OPEN CIRCUIT THERMOPILE TESTING (Honeywell Gas Control) The following test should be performed while the pilot flame is on. Step 1. Turn knob to pilot position and depress. Step 2. Continue pressing knob and remove red (+) wire from resettable thermal door switch. Step 3.
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Page 15: Pilot Assembly Inspection Cleaning And Replacement
SERVICE PROCEDURE RG-III Pilot Assembly Inspection, Cleaning and Replacement PILOT/ELECTRODE ASSEMBLY INSPECTION, CLEANING AND REPLACEMENT Step 1. Turn off gas supply to water heater. Rotate knob of gas control/gas valve to “OFF” position. Step 2. Remove outer jacket door. Step 3. Remove right side of inner door per SERVICE PROCEDURE RG-I, steps 3a through 3c. -
Page 16: Piezo Igniter, Electrode Testing And Replacement
SERVICE PROCEDURE RG-IV Piezo Igniter, Electrode Testing and Replacement PIEZO IGNITER, ELECTRODE TESTING AND REPLACEMENT With the pilot, not in operation (no pilot flame) you can check the piezo and electrode circuit by viewing pilot thru the sight glass located on the inner door and observing the spark action. Step 1. -
Page 17: White Rodgers Gas Valve Testing And Replacement
SERVICE PROCEDURE RG-V Gas Valve Testing and Replacement (White Rodgers) Gas Valve Testing and Replacement (White Rodgers) The gas valve is a non-repairable device. If trouble shooting has determined a problem with the gas valve, it must be replaced. If the burner and/or pilot do not function, service checks for gas pressure, thermocouple output, magnet assembly and ECO are to be performed. - Page 18 SERVICE PROCEDURE RG-V Gas Valve Testing and Replacement (White Rodgers) THERMOCOUPLE TESTING See SERVICE PROCEDURE RG-II MAGNET ASSEMBLY TESTING (White Rodgers Control) Step 1. Following the lighting instruction label on the heater, proceed to light the pilot and allow to operate for three minutes.
- Page 19 SERVICE PROCEDURE RG-V Gas Valve Testing and Replacement (White Rodgers) COMBINATION THERMOSTAT/GAS VALVE REPLACEMENT Step 1. Rotate knob of the gas valve to the “OFF” position. For White Rodgers Control, Step 2. Turn off gas supply to water heater. depress knob slightly and rotate clockwise to the “OFF”...
- Page 20 SERVICE PROCEDURE RG-V Gas Valve Testing and Replacement (White Rodgers) Step 7. Removal of gas valve. a) Disconnect main burner feedline, pilot tube and thermocouple from gas valve & remove burner from combustion chamber. NOTE: Feed line nut for natural gas control uses right hand threads, LP control uses left hand thread.
- Page 21 SERVICE PROCEDURE RG-V Gas Valve Testing and Replacement (White Rodgers) Step 9. Reinstallation of inner door assembly. (cont.) b) Clean any gasket residue or other debris from combustion chamber surface before installing the inner door/gasket assembly. c) Position thermocouple, pilot tube and Piezo wire against left side inner door flange gasket. DO NOT ROUTE THROUGH RADIUSED CHANNEL WITH FEEDLINE.
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Page 22: Honeywell Gas Control Testing, Disassembly, And Replacement
SERVICE PROCEDURE RG-VI SERVICE PROCEDURE RG-VI Gas Control Testing, Disassembly & Gas Control Testing, Disassembly & Replacement (Honeywell) Replacement (Honeywell) dure presumes a maximum line pressure of 14.0" w.c.) MANIFOLD PRESSURE TESTING (this procedure presumes a maximum line pressure of 14.0" w.c.) Step 1. - Page 23 SERVICE PROCEDURE RG-VI SERVICE PROCEDURE RG-VI Gas Control Testing, Disassembly & Gas Control Testing, Disassembly & Replacement (Honeywell) Replacement (Honeywell) TEMPERATURE SENSOR TESTING TEMPERATURE SENSOR TESTING CAUTION DO NOT use standard multimeter probes for this test. Doing so will damage connector. Use special pin type Doin If control has gone into lockout due to excessive If control has gone into lockout due to excessive...
- Page 24 SERVICE PROCEDURE RG-VI SERVICE PROCEDURE RG-VI Gas Control Testing, Disassembly & Gas Control Testing, Disassembly & Replacement (Honeywell) Replacement (Honeywell) ARNING WARNING rming the following steps in this procedure. Stored water may be HOT when performing the following steps in this procedure. ion to prevent personal injury.
- Page 25 SERVICE PROCEDURE RG-VI SERVICE PROCEDURE RG-VI Gas Control Testing, Disassembly & Gas Control Testing, Disassembly & Replacement (Honeywell) Replacement (Honeywell) GAS CONTROL REPLACEMENT GAS CONTROL REPLACEMENT Step 1. Rotate knob of the gas control to the “OFF” position. Step 1. Rotate knob of the gas control to the “OFF” positi Step 2.
- Page 26 SERVICE PROCEDURE RG-VI SERVICE PROCEDURE RG-VI Gas Control Testing, Disassembly & Gas Control Testing, Disassembly & Replacement (Honeywell) Replacement (Honeywell) GAS CONTROL REPLACEMENT continued). Step 8. Install new gas control into water heater (continued). ilot tube, piezo igniter wire, inner door wire (red) and thermopile b) Reattach main burner feedline, pilot tube, piezo igniter wire, inner door wire (red) and thermopile h inner door wire (red) to the positive (+) terminal and the wire (white) to gas control.
- Page 27 SERVICE PROCEDURE RG-VI SERVICE PROCEDURE RG-VI Gas Control Testing, Disassembly & Gas Control Testing, Disassembly & Replacement (Honeywell) Replacement (Honeywell) GAS CONTROL REPLACEMENT GAS CONTROL REPLACEMENT Step 9. Reinstallation of inner door assembly (continued). Step 9. Reinstallation of inner door assembly (continue d) Firmly place right side inner door flange against the left side inner door flange and d) Firmly place right side inner door fl secure with (2) hex drive screws from step 6c.
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Page 28: Burner Operation Inspection, Adjustment, Cleaning And Replacement
Under no circumstances shall flammable materials be used or stored in the vicinity of the water heater. Defender Safety System will be inactivated. If flammable With the inner door removed the Bradford White Defender Safety System will be inactivated. If flammable causing property damage, personal injury or death. - Page 29 SERVICE PROCEDURE RG-VII SERVICE PROCEDURE RG-VII Burner Operation Inspection, Adjustment Burner Operation Inspection, Adjustment Cleaning and Replacement Cleaning and Replacement MAIN BURNER: Inspection, Adjustment, Cleaning and Replacement (cont.) MAIN BURNER: Inspection, Adjustment, Clea Step 3. Fully inspect inner gasket per SERVICE PROCEDURE RG-I, step 4. Replace gasket if required Step 3.
- Page 30 SERVICE PROCEDURE RG-VII SERVICE PROCEDURE RG-VII Burner Operation Inspection, Adjustment Burner Operation Inspection, Adjustment Cleaning and Replacement Cleaning and Replacement BURNER CLEANING (Cont.) Step 4. ain burner orifice & Disconnect (unscrew) main burner from main burner orifice & disconnect (unscrew) feedline from burner. Step 5.
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Page 31: Resettable Thermal Switch Testing And Replacement
SERVICE PROCEDURE RG-VIII SERVICE PROCEDURE RG-VIII Resettable Thermal Switch Resettable Thermal Switch Testing and Replacement Testing and Replacement RESETTABLE THERMAL SWITCH CONTINUITY TESTING RESETTABLE THERMAL SWITCH CONTINUIT Step 1. Remove outer jacket door. Step 1. Remove outer jacket door. Step 2. Disconnect wire leads from resettable thermal switch. - Page 32 SERVICE PROCEDURE RG-VIII SERVICE PROCEDURE RG-VIII Resettable Thermal Switch Resettable Thermal Switch Testing and Replacement Testing and Replacement ACEMENT RESETTABLE THERMAL SWITCH REPLACEMENT at gas valve to the off position. Step 1. Rotate knob of combination thermostat gas valve to the off position. Step 2.
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Page 33: Screenlok Flame Arrestor Cleaning
SERVICE PROCEDURE RG-IX SERVICE PROCEDURE RG-IX ® ® ScreenLok Flame Arrestor Cleaning ScreenLok Flame Arrestor Cleaning ® ® ScreenLok Flame Arrestor Cleaning ScreenLok Flame Arrestor Cleaning Step 1. Rotate knob of combination thermostat gas valve to the off position. Step 1. Rotate knob of combination thermostat gas valve to t Step 2. -
Page 34: Diptube And Anode Inspection And Replacement
SERVICE PROCEDURE RG-X SERVICE PROCEDURE RG-X Diptube and Anode Diptube and Anode Inspection and Replacement Inspection and Replacement MENT DIPTUBE INSPECTION AND REPLACEMENT WARNING WARNING ay be HOT when performing the following steps in Heater components and stored water may be HOT when performing the following steps in ry precaution to prevent personal injury. - Page 35 SERVICE PROCEDURE RG-X SERVICE PROCEDURE RG-X Diptube and Anode Diptube and Anode Inspection and Replacement Inspection and Replacement ANODE INSPECTION AND REPLACEMENT ANODE INSPECTION AND REPLACEMENT WARNING WARNIN Heater components and stored water may be HOT when performing the following steps in Heater components and stored water may be HO this procedure.
- Page 36 Generic Parts List Generic Parts List Draft Hood Main Burner Orifice Main Burner Orifice Hot Water Outlet/Anode Pilot Assembly Pilot Assembly Cold Water Inlet Tube Pilot Orifice Pilot Orifice Flue Baffle Thermocouple/Thermopile Thermocouple/Thermopile T&P Relief Valve Complete X Burner Assembly (LP) Complete X Burner Assembly (LP) Gas Control (Honeywell V1) X Burner Only...