Bradford White D100L1993N - User Manual

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Manual 47985A REV 08/18
SERVICE
MANUAL
Troubleshooting Guide
and Instructions for Service
(To be performed ONLY by
qualified service providers)
Models Covered
by This Manual:
For The Bradford White
“D” Series Models:
D38T155
D75T(125,160,300)
D65T(370,399)
D80T(180,199,250)
D80T(425,505)
D100T(199,250)
D80L(399,450,505)
D100L(199,250,270,300)
D100S(199,250)
Gas Water Heaters
COMMERCIAL 24 VOLT FLUE DAMPER
SERIES WATER HEATER WITH HONEYWELL
INTEGRATED CONTROL SYSTEM
®

Summary

Tools Required for Service

Specifications

ERROR CODE DEFINITIONS

Troubleshooting

Entering Service Mode

Explains how service personnel can enter and navigate the water heater's service mode for diagnostics.

Error Code History and Display

Details how error codes appear on the display and how to access the history of past operational errors.

Lockout Condition Reset

Details procedures for resetting soft and hard lockout conditions after correcting a fault.

SERVICE PROCEDURE D24-I Thermostat Circuit Testing

Sensor Resistance Testing

SERVICE PROCEDURE D24-II Pilot Operation Testing

Pilot Inspection

SERVICE PROCEDURE D24-III Main Burner Operation Testing

SERVICE PROCEDURE D24-IV Main Burner & Pilot Removal and Inspection

Main Burner Removal and Inspection

Pilot Burner Removal and Inspection

Control Board Replacement

SERVICE PROCEDURE D24-V Flue Baffle Removal, Inspection

SERVICE PROCEDURE D24-VI Anode Removal and Inspection

Bradford White D100L1993N Specifications