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TROUBLESHOOTING GUIDE
ELECTRIC INSTANTANEOUS TANKLESS WATER HEATER
Flow Controlled
“EFC” - MODELS
EFC-5500-4-S-10 240V
EFC-6500-4-S-10 240V
EFC-7500-4-S-10 240V
EFC-9500-4-S-10 240V
EFC-8300-2-S-10 208V
EFC-6000-5-S-10 277V
EFC-8000-5-S-10 277V
EFC-9000-5-S-10 277V
EFC-10000-5-S-10 277V
All information necessary to troubleshoot this water
heating unit is contained in this fully illustrated
guide. If problems still exist after reading and
carrying out the instructions in this manual, contact
Technical Service at the toll free number below for
assistance.
PHONE TOLL FREE
1-800-334-3393
238-43144-00 Rev. 5/02
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GENERAL
UP
Out In
Water outlet/inlet (Bottom)
This is how your “EFC” model should look when mounted correctly on the wall.
Refer to the U.L. rating label on the front cover of the unit to verify the unit is an
“EFC” model before continuing.
Any
other mounting configuration will prevent the unit from operating properly.
If the unit is mounted correctly and still does not produce hot water, look to see if the
indicator light illuminates when the hot water faucet is fully opened.
If the indicator light illuminates, turn to page 5.
If the indicator light does not illuminate, turn to page 3
All other possible situations turn to page 6.
Serial number
Indicator
light
U.L. Rating label
Model # = Order Ref. #
2