Bradford-White Corp D-38T-155 guide

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Bradford-White Corp D-38T-155 service manual Parts@bradfordwhite.com Techserv@bradfordwhite.com

Contents

Service Manual To be performed only by qualified service providers Table of Contents Features of Honeywell Integrated Controls System Tools Required for Service Specifications Sequence of Operation Lockout Condition Troubleshooting Pins to black and white wiresVoltage at primary pins 1&3 white Defective Displaying temperature Sensors Example of error code shown on control displayFrom previous Operate? Using Control Display for Servicing Water Heater Sensor is used Setpoint Display/Change Software Version Display only Select SET ExitingSELECTServiceSETMode Display of Water Temperature To Display and Change Temperature Setpoint To Display Flame Sense Current of the Pilot Flame Sensor Setpoint Flashes Selectset Idle Status Operational Error Codes and Error History Display Error Code History To view previous error codes ExitingSELECTServiceSET Mode Error Code Definitions Error Code Shown Water Heater Display Press for 3 seconds to reset control in service mode Service Procedure D24-I Thermostat Circuit TestingDo not reset the display from the hard lockout State without correcting the cause Service Procedure D24-I Upper thermister location Applicable models Upper SensorLower Sensor 131 Service Procedure D24-IIPilot Operation Testing Pilot Inspection Micro-amp readings Meter ProbeMeter Probe Micro Amp = 114 Service Procedure D24-IIIMain Burner Operation Testing Build-up causing restriction Heater. Refer to Installation InstructionsSee Pilot Inspection section Inspection Service Procedure D24-IV Main Burner & Pilot Removal and InspectionMain Burner Removal Main Burner Inspection Pilot Burner Removal Pilot Burner InspectionFlame Rod Ferrule Nut To remove lower sensor Control Board ReplacementControl board replacement Service Procedure D24-V Flue Baffle Removal, Inspection Service Procedure D24-VI Approximate Anode Rod Locations Generic Parts List 15A 16/16A 17/17A 13A 14A 16A 17A6A 11A 10A 18A 15A 19A 12A 20A 19B 20B 17B18B 16B 12B10B 13B 14B 15B BTU/H CO2ECO GFIPage Page Parts@bradfordwhite.com Techserv@bradfordwhite.com