Bradford-White Corp D-38T-155 Error Codes and Error History Display, Error Code History

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Troubleshooting

Step 5: Pressing “Select” button will return display to setpoint in format selected (°F or °C) immediately

°F

idle

Status Operational

Lower Sensor

SELECTSET

Error Codes and Error History Display:

If there is an operating problem with the water heater, an error code number will appear on the water heater display with “Service Needed” to the right of the “Status” indicator. The error code label is located under the water heater display. The following section in this Service Manual explains the error codes with corrective actions to repair the water heater.

Example of Error Code in the Display

idle Service Needed

SELECT

Lockout RESET

Error Code History:

In “Service Mode” pressing the “Select” button after the “Software Version” (item 8 in the previously described sequence of service modes) will show an error code history, if there have been any previous operating problems with the water heater. If the display shows --, there is not a current error code.

The Water Heater Display will provide up to 10 previous error codes. The oldest error code will be stored in code index #1 and the most recent in code index #10.

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Contents To be performed only by qualified service providers Service ManualTable of Contents Features of Honeywell Integrated Controls System Tools Required for Service Specifications Lockout Condition Sequence of OperationDefective TroubleshootingPins to black and white wires Voltage at primary pins 1&3 whiteOperate? Displaying temperature SensorsExample of error code shown on control display From previousUsing Control Display for Servicing Water Heater Sensor is used Setpoint Display/Change Software Version Display only Select SET Display of Water Temperature ExitingSELECTServiceSETModeTo Display Flame Sense Current of the Pilot Flame Sensor To Display and Change Temperature SetpointSetpoint Flashes Selectset Idle Status Operational Error Code History Error Codes and Error History DisplayTo view previous error codes ExitingSELECTServiceSET Mode Error Code Definitions Press for 3 seconds to reset control in service mode Error Code Shown Water Heater DisplayState without correcting the cause Service Procedure D24-IThermostat Circuit Testing Do not reset the display from the hard lockoutService Procedure D24-I Lower Sensor Upper SensorUpper thermister location Applicable models Pilot Operation Testing Service Procedure D24-II131 Pilot Inspection Micro Amp = Micro-amp readings MeterProbe Meter ProbeMain Burner Operation Testing Service Procedure D24-III114 Inspection Build-up causing restrictionHeater. Refer to Installation Instructions See Pilot Inspection sectionMain Burner Inspection Service Procedure D24-IVMain Burner & Pilot Removal and Inspection Main Burner RemovalFerrule Nut Pilot Burner RemovalPilot Burner Inspection Flame RodControl board replacement Control Board ReplacementTo remove lower sensor Flue Baffle Removal, Inspection Service Procedure D24-VService Procedure D24-VI Approximate Anode Rod Locations 15A 16/16A 17/17A Generic Parts List13A 14A 16A 17A6A 11A 10A 18A 15A 19A 12A 20A 14B 15B 19B 20B 17B18B 16B 12B10B 13BGFI BTU/HCO2 ECOPage Page Parts@bradfordwhite.com Techserv@bradfordwhite.com