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Bradford White
Water Heater
EF120T4003N3
Bradford White EF120T4003N3 User Manual
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e
Manual 238-53597-00B REV 5/20
SERVICE
MANUAL
Troubleshooting Guid
e
and Instructions for Service
(To be performed ONLY by
qualified service providers)
Models Covered
by This Manual
:
EF120T4003N(A)3
EF120T5003N(A)3
Commercial Ultra High Efficiency Models
with Direct Spark Ignition
Effective: April, 2020
ECO 8160
2
Table of Contents
Table of Contents
2
Introduction
3
How to Use this Manual
3
Tools Required for Service
4
Features
4
Specifications
5
Sequence of Operations
8
Building Management System (BMS)
10
Troubleshooting
11
Service Procedure V: Blower Testing and Replacement
30
Service Procedure VII: Flame Sensor Testing and Replacement
35
Service Procedure IX: Ignition Control Board Replacement
39
Service Procedure X: Transformer Replacement
40
Water Heater Installation Checklist
44
Water Heater Service Report
45
Glossary of Terms
46
Notes
46
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Bradford White EF120T4003N3 Specifications
General
Brand
Bradford White
Model
EF120T4003N3
Category
Water Heater
Language
English
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