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Table of Contents
Page Service Procedure
I
ntroduction ………………………………………………………………………. 2 - - -
Tools……………………………………………………………………………… 2 - - -
G
eneral Information ……………………………………………………………… 3 - - -
Sequence of Operation …………………………………………………………… 10 - - -
Troubleshooting …………………………………………………………………. 13 - - -
Heating Element Testing …………….................................................................... 15 MCE-I
Line Voltage Testing………………...…………………………………………… 16 MCE-II
Fuse Testing…........................................................................................................ 17 MCE-III
High Limit (ECO) Testing (Surface Mounted Thermostats)……………………. 18 MCE-IV
High Limit (ECO) Testing (Surface Mounted Thermostats at 600V)……………. 19 MCE-V
High Limit (ECO) Testing (Contactor Models)…………………………………. 20 MCE-VI
Thermostat Operation Testing (Surface Mounted Thermostats)..............................21 MCE-VII
Thermostat Operation Testing (Surface Mounted Thermostats at 600V)………… 22 MCE-VIII
Thermostat Operation Testing (Contactor Models)..................................................23 MCE-IX
Contactor Operation Testing……………………………………………………… 24 MCE-X
Thermostat Removal and Replacement (Surface Mounted Thermostats)…………26 MCE-XI
Thermostat Removal and Replacement (Contactor Models)………………………27 MCE-XII
ECO Removal and Replacement (Contactor Models)……………………………..28 MCE-XIII
ECO Removal and Replacement (Surface Mounted Thermostats at 600V)……….29 MCE-XIV
Heating Element Removal and Replacement …………………………………….. 30 MCE-XV
Anode Inspection and Replacement ……………………………………………… 31 MCE-XVI
Generic Parts List ………………………………………………………………… 32 - - -
Glossary of Terms……………………………………………………………….... 33 - - -
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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.
Introduction
MII Series Commercial Electric
Water Heaters
Tools
- Multi Meter. - Phillips Head Screw Driver.
- 1-½” Deep Well Socket. - Common Screw driver.
- 1-1/16" Deep Well Socket. - Thermometer.
- ¼" Nut Driver. - Drain Hose.
- Other Hand Tools: Pipe Wrench, Channel Locks, Pliers (common & needle nose), Wire cutters, Wire Strippers,
Allen Wrench Set, Flash Light.
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