Table of Contents Page Service Procedure
Introduction ………………………………………………………………………. 2 - - -
Tools……………………………………………………………………………… 2 - - -
General 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 (SurfaceMounted Thermostats)……………………. 18 MCE-IV
High Limit (ECO) Testing (Surface Mounted Thermostats at 600V)……………. 19 MCE-V
High Limit (ECO) Testing (ContactorModels)…………………………………. 20 MCE-VI
Thermostat Operation Testing (SurfaceMounted Thermostats).............................. 21 MCE-VII
Thermostat Operation Testing (SurfaceMounted Thermostats at 600V)………… 22 MCE-VIII
Thermostat Operation Testing (ContactorModels)..................................................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 at600V)……….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 manualis designed to aid service and maintenance professionals on the function, proper diagnosis and repair of
BradfordWhite Commercial Electric Water Heaters.
The text and illustrationsin this manual provide step by step instructions to facilitate proper operation and troubleshooting
procedures. Contact the Bradford White Technical Support Group immediately ifdiagnosis can not be made using the
methods described in this service manual.
Introduction

MII Series Commercial Electric

Water Heaters

Tools
- Multi Meter. - Phillips Head ScrewDriver.
- 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, ChannelLocks, Pliers (common & needle nose), Wire cutters, Wire Strippers,
Allen Wrench Set, Flash Light.
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