Bradford-White Corp
D-38T-155
service manual
Troubleshooting
Specs
Parts list
Error codes
Service Procedure D24-I
Displaying temperature Sensors
Pilot Operation Testing
Control Board Replacement
Service Manual
Build-up causing restriction
Page 43
NOTES
Page 42
Page 44
Image 43
Page 42
Page 44
Contents
To be performed only by qualified service providers
Service Manual
Table of Contents
Features of Honeywell Integrated Controls System
Tools Required for Service
Specifications
Lockout Condition
Sequence of Operation
Defective
Troubleshooting
Pins to black and white wires
Voltage at primary pins 1&3 white
Operate?
Displaying temperature Sensors
Example of error code shown on control display
From previous
Using Control Display for Servicing Water Heater
Sensor is used
Setpoint Display/Change
Software Version Display only
Select SET
Display of Water Temperature
ExitingSELECTServiceSETMode
To Display Flame Sense Current of the Pilot Flame Sensor
To Display and Change Temperature Setpoint
Setpoint Flashes
Selectset
Idle Status Operational
Error Code History
Error Codes and Error History Display
To view previous error codes
ExitingSELECTServiceSET Mode
Error Code Definitions
Press for 3 seconds to reset control in service mode
Error Code Shown Water Heater Display
State without correcting the cause
Service Procedure D24-I
Thermostat Circuit Testing
Do not reset the display from the hard lockout
Service Procedure D24-I
Lower Sensor
Upper Sensor
Upper thermister location Applicable models
Pilot Operation Testing
Service Procedure D24-II
131
Pilot Inspection
Micro Amp =
Micro-amp readings Meter
Probe
Meter Probe
Main Burner Operation Testing
Service Procedure D24-III
114
Inspection
Build-up causing restriction
Heater. Refer to Installation Instructions
See Pilot Inspection section
Main Burner Inspection
Service Procedure D24-IV
Main Burner & Pilot Removal and Inspection
Main Burner Removal
Ferrule Nut
Pilot Burner Removal
Pilot Burner Inspection
Flame Rod
Control board replacement
Control Board Replacement
To remove lower sensor
Flue Baffle Removal, Inspection
Service Procedure D24-V
Service Procedure D24-VI
Approximate Anode Rod Locations
15A 16/16A 17/17A
Generic Parts List
13A 14A 16A 17A6A 11A 10A 18A 15A 19A 12A 20A
14B 15B
19B 20B 17B18B 16B 12B10B 13B
GFI
BTU/H
CO2
ECO
Page
Page
Parts@bradfordwhite.com Techserv@bradfordwhite.com
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