Bradford-White Corp MI30T*F service manual Service Manual

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Flammable Vapor Ignition

Resistant Water Heaters

Gas Water Heaters

SERVICE

MANUAL

Troubleshooting Guide

and Instructions for Service

(To be performed ONLY by qualified service providers)

FEATURING

For the Bradford White

Defender Safety System®

Models:

MI30T*F(BN,CX,SX) M430T*F(BN,CX,SX)

MI30S*F(BN, CX,SX) M440T*F(BN, CX,SX)

MI303T*F(BN,CX,SX) M4403S*F(BN,CX,SX)

MI40T*F(BN,CX,SX) M4503*F(BN,CX,SX)

MI403S*F(BN,CX,SX) M460T*F(BN,CX,SX)

MI404T*F(BN,CX,SX) M1XR403S*F(BN,CX,SX)

MI503*F(BN,CX,SX) M1XR504T*F(BN,CX,SX)

MI50L*F(BN,CX,SX) M2XR504T*F(BN,CX,SX)

MI504S*F(BN,CX,SX) M2XR65T*F(BN,CX,SX)

MI60T*F(BN,CX,SX) M2C504T*F(BN,CX,SX) C(S,D)W2504T*F(BN,CX,SX) 50T65F(B*N,C*X,S*X)

65T65F(B*N,C*X,S*X)

(*) Denotes Warranty Years

Manual 238-44943-00D

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Contents Service Manual Bradford White Introduction White Rodgers/Robertshaw Gas Valve Troubleshooting Chart Honeywell Gas Control Troubleshooting Chart Honeywell Gas Control Troubleshooting Chart Defender Installation of Inner Door With Gasket Combustion chamber Closed Circuit Thermocouple Testing Robertshaw Control Closed Circuit Thermocouple Testing White Rodgers ControlThermocouple Replacement White Rodgers/Robertshaw Gas Valve Open Circuit Thermopile Testing Honeywell Gas Control PILOT/ELECTRODE Assembly Inspection Cleaning and Replacement Defender Piezo IGNITER, Electrode Testing and ReplacementLine Pressure Gas Valve Testing and Replacement White Rodgers/RobertshawMagnet Assembly Testing White Rodgers Control Thermocouple TestingMagnet Assembly Testing Robertshaw Control Combination THERMOSTAT/GAS Valve Replacement ECO Energy Cut Off TestingWrench Boss Position thermocouple, pilot tube and Piezo wire Honeywell Gas Control Testing, Disassembly, and Replacement Thermopile Testing Defender Temperature Sensor TestingSensor Resistance at Various Temperatures Determine Water Temperature Inside TankGAS Control DISASSEMBLY/REASSEMBLY Temperature sensor Wire routing clip Disconnect Use caution not to bend or damage valve body pins Pull in this direction Temperature sensor Insertion stick GAS Control Replacement Defender Combustion chamber Cast Iron Burner Adjustment Main Burner Inspection, Adjustment Cleaning and ReplacementPosition thermocouple/thermopile Pilot tube and Piezo wire Burner Cleaning Resettable Thermal Switch Continuity Testing Over Tighten Screws Resettable Thermal Switch ReplacementFeedline Nut ScreenLok Flame Arrestor CleaningDIP Tube Inspection and Replacement Anode Inspection and Replacement Generic Parts List Parts@bradfordwhite.com Techserv@bradfordwhite.com