Bradford-White Corp D-38T-155 service manual Software Version Display only

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Troubleshooting

7. Software Version (Display only)

Soft

idle

Status Operational

SELECTSET

8.Error Code History (Displays if there are present error codes or up to 10 previous error codes). Water Heater Display will show a “--“ if there are no error codes.

WARNING Setting the water temperature to the maximum set point can result in scalding hot water delivered to the faucets. It is highly recommended that the maximum setpoint be adjusted to the lowest temperature possible for the needs of the installation. Make sure the water heater control display is not in a public area that can result in the temperature settings being improperly adjusted.

idle

Status Operational

SELECTSET

To change the Maximum Setpoint Limit (Max Setpoint) for the temperature setpoint:

Step 1: In service mode press the “Select” button until “Max Setpoint” is displayed.

°F Max

Setpoint

idle

Status Operational

SELECTSET

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Contents Service Manual To be performed only by qualified service providersTable of Contents Features of Honeywell Integrated Controls System Tools Required for Service Specifications Sequence of Operation Lockout ConditionTroubleshooting Pins to black and white wiresVoltage at primary pins 1&3 white DefectiveDisplaying 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 TemperatureTo Display and Change Temperature Setpoint To Display Flame Sense Current of the Pilot Flame SensorSetpoint Flashes Selectset Idle Status Operational Error Codes and Error History Display Error Code HistoryTo view previous error codes ExitingSELECTServiceSET Mode Error Code Definitions Error Code Shown Water Heater Display Press for 3 seconds to reset control in service modeService Procedure D24-I Thermostat Circuit TestingDo not reset the display from the hard lockout State without correcting the causeService Procedure D24-I Upper Sensor Lower SensorUpper thermister location Applicable models Service Procedure D24-II Pilot Operation Testing131 Pilot Inspection Micro-amp readings Meter ProbeMeter Probe Micro Amp =Service Procedure D24-III Main Burner Operation Testing114 Build-up causing restriction Heater. Refer to Installation InstructionsSee Pilot Inspection section InspectionService Procedure D24-IV Main Burner & Pilot Removal and InspectionMain Burner Removal Main Burner InspectionPilot Burner Removal Pilot Burner InspectionFlame Rod Ferrule NutControl Board Replacement Control board replacementTo remove lower sensor Service Procedure D24-V Flue Baffle Removal, InspectionService Procedure D24-VI Approximate Anode Rod Locations Generic Parts List 15A 16/16A 17/17A13A 14A 16A 17A6A 11A 10A 18A 15A 19A 12A 20A 19B 20B 17B18B 16B 12B10B 13B 14B 15BBTU/H CO2ECO GFIPage Page Parts@bradfordwhite.com Techserv@bradfordwhite.com