Bradford-White Corp C(S, D)W275T*(BN, CX service manual Service Manual

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Atmospheric Gas Water Heaters

For Models Using White Rodgers,

Robertshaw and Honeywell Gas Control

SERVICE

MANUAL

Troubleshooting Guide

and Instructions for Service

(To be performed ONLY by qualified service providers)

Models Covered by This Manual:

GX225S*BN

GX155S*BN

25X78B*N

55X80B*N

M1XR65T*(BN,CX,SX)

MI75S*(BN,CX,SX)

M2XR75S*(BN,CX,SX)

MI100T*(BN,CX,SX)

65T65*(BN,CX,SX)

75T80*(BN,CX,SX)

C(S,D)W275T*(BN,CX,SX)

(*) Denotes Warranty Years

(GX155S6BN Model Shown)

Manual 238-46647-00B

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Contents Service Manual Table of Contents Troubleshooting Chart LED Status Control Status Probable Cause LED Status Control Status Probable Cause Service Procedure Open Circuit Thermocouple Testing Service Procedure AG-IThermocouple Replacement Closed Circuit Thermopile Testing Open Circuit Thermopile TestingAn Open Circuit test A Closed Circuit testThermopile Replacement Step Turn off gas supply to water heater. Rotate knob Pilot Assembly Inspection Cleaning and Replacement IGNITER/ELECTRODE Testing Replacement Gas Control Testing and Replacement Service Procedure AG-IIILine Pressure Magnet Assembly Testing White Rodgers Control Thermocouple TestingMagnet Assembly Testing Robertshaw Control GAS Control Replacement ECO Energy Cut Off TestingInstallation of gas control Honeywell Thermowell Testing Determine Water Heater Tank Temperature Honeywell GAS Control Removal from Thermowell Honeywell GAS Control & Thermowell RemovalHoneywell GAS Control Assembly to Thermalwell Cast Iron Burner Adjustment Service Procedure AG-IVBurner Cleaning Steel & Cast Iron Burner Cleaning Diptube Inspection and Replacement Service Procedure AG-VTurn gas control knob to OFF position Anode Inspection and ReplacementPage Page