Service Manual

2
The Bradford White
DEFENDER
Safety System
®
Flammable Vapor Ignition Resistant Water Heaters
Table of Contents
Page
Service
Procedure
Introduction…………………………………………………………………………
…...4
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Troubleshooting Charts…………………………………………………………….
…...6
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Inner Door Gasket Removal, Inspection, and Replacement……………………
…..12
RG-I
Thermocouple/Thermopile Testing and Replacement………………………….
…..15
RG-II
Pilot Assembly Inspection Cleaning and Replacement…………………………
…..18
RG-III
Piezo Igniter, Electrode Testing and Replacement……………………………..
…..19
RG-IV
White Rodgers Mechanical Gas Valve Testing and Replacement…………….
…..20
RG-V
Electronic Gas Control Testing, Disassembly, and Replacement………………
…..25
RG-VI
Burner Operation Inspection, Adjustment, Cleaning, and Replacement………
…..35
RG-VII
Resettable Thermal Switch Testing and Replacement………………………..…
.…..37
RG-VIII
ScreenLok
®
Flame Arrestor Cleaning…………………………………………
….
…..
39
RG-IX
Diptube and Anode Inspection and Replacement………………………………..
…..40
RG-X
Parts Diagram………………………………………………………………………..
…..42
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Notes………..………………………………………………………………………
…...43
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