Table of Contents
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Introduction .................................................................................. 2
Tools.......................................................................................... 2
General Information ........................................................................ 3
Sequence of Operation ..................................................................... 10
Troubleshooting ............................................................................ 13
Heating Element Testing ................................................................................... 15
Line Voltage Testing........................................................................ 16
Fuse Testing........................................................................................................... 17
High Limit (ECO) Testing (Surface Mounted Thermostats)......................... 18
High Limit (ECO) Testing (Surface Mounted Thermostats at 600V)................ 19
High Limit (ECO) Testing (Contactor Models)........................................ 20
Thermostat Operation Testing (Surface Mounted Thermostats).............................. 21
Thermostat Operation Testing (Contactor Models)..................................................23
Contactor Operation Testing............................................................... 24
Thermostat Removal and Replacement (Contactor Models)...........................27
ECO Removal and Replacement (Contactor Models)...................................28
Heating Element Removal and Replacement ............................................ 30
Anode Inspection and Replacement ...................................................... 31
Generic Parts List ........................................................................... 32
Glossary of Terms............................................................................ 33
This service manual is designed to aid service and maintenance professionals on the function, proper diagnosis and repair of
Bradford White Commercial Electric Water Heaters.
The text and illustrations in this manual provide step by step instructions to facilitate proper operation and troubleshooting
procedures. Contact the Bradford White Technical Support Group immediately if diagnosis can not be made using the
methods described in this service manual.
- Multi Meter.
- 1-½" Deep Well Socket.
- 1-1/16" Deep Well Socket.
- ¼" Nut Driver.
- Other Hand Tools: Pipe Wrench, Channel Locks, Pliers (common & needle nose), Wire cutters, Wire Strippers,
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Table of Contents
Allen Wrench Set, Flash Light.
Introduction
Tools
- Phillips Head Screw Driver.
- Common Screw driver.
- Thermometer.
- Drain Hose.
Page 2
MII Series Commercial Electric
Water Heaters
Page
Service Procedure
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MCE-I
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Table of Contents
