Bradford-White Corp D-38T-155 specification

NOTES

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Bradford-White Corp D-38T-155 service manual

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 Voltage at primary pins 1&3 white TroubleshootingPins to black and white wires Defective From previous Displaying temperature SensorsExample of error code shown on control display 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 Do not reset the display from the hard lockout Service Procedure D24-IThermostat Circuit Testing State without correcting the cause Service Procedure D24-I Upper Sensor Lower SensorUpper thermister location Applicable models Service Procedure D24-II Pilot Operation Testing131 Pilot Inspection Meter Probe Micro-amp readings MeterProbe Micro Amp = Service Procedure D24-III Main Burner Operation Testing114 See Pilot Inspection section Build-up causing restrictionHeater. Refer to Installation Instructions Inspection Main Burner Removal Service Procedure D24-IVMain Burner & Pilot Removal and Inspection Main Burner Inspection Flame Rod Pilot Burner RemovalPilot Burner Inspection Ferrule Nut Control Board Replacement Control board replacementTo remove lower sensor 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 ECO BTU/HCO2 GFIPage Page Parts@bradfordwhite.com Techserv@bradfordwhite.com