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TROUBLESHOOTING GUIDE
ELECTRIC INSTANTANEOUS TANKLESS WATER HEATER
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
"EFC" - MODELS
EFC-5500-4-S-10
EFC-6500-4-S-10
EFC-7500-4-S-10
EFC-9500-4-S-10
EFC-8300-2-S-10
EFC-6000-5-S-10
EFC-8000-5-S-10
EFC-9000-5-S-10
EFC-10000-5-S-10
1-800-334-3393
Flow Controlled
240V
240V
240V
240V
208V
277V
277V
277V
277V
238-43144-00 Rev. 5/02
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Summary of Contents for Bradford White EFC-5500-4-S-10
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Page 1: Troubleshooting Guide
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. - Page 2 GENERAL Serial number Indicator light U.L. Rating label Model # = Order Ref. # 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”...
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Page 3: Minimum Flow Rate
Flow rate (gpm) = v/t x 60 = 1 gal./87 sec. x 60 sec./1 min. = .69 gpm Open all water valves completely. If the indicator light still does not illuminate then proceed to STEP THREE. MODEL TYPE / ORDER REF. # MINIMUM FLOW RATE EFC-5500-4-S-10, EFC-6500-4-S-10 0.55 GPM EFC-7500-4-S-10, EFC-8000-5-S-10, EFC-8300-2-S-10 0.65 GPM... -
Page 4: Note: Be Sure The Electricity Is Turned Off To The Unit
STEP THREE: A multimeter / voltmeter is required to perform the following test. DANGER! TURN OFF THE CIRCUIT BREAKER BEFORE PROCEEDING WITH THE NEXT TESTS. Set the meter to the single ohms setting Ω Do not measure continuity, this will not work. The Ohm Symbol (The upside down horseshoe) NOTE: BE SURE THE ELECTRICITY IS TURNED OFF TO THE UNIT... - Page 5 The indicator light illuminates but water is not heated or the water temperature is too low: STEP ONE: The water flow rate is too high. Reduce the water flow using the faucet. With experimentation, an increase in water temperature should be observed. BE CAREFUL, THE WATER EXITING THE FAUCET IS HOT.
- Page 6 STEP TWO Inspect the inlet filter (See diagram above for location). Make sure the inlet filter screen is free from debris, pipe dope or any other foreign materials, which may prevent adequate water flow. IF HAVING CARRIED OUT ALL THE TESTS LISTED ABOVE AND THE UNIT IS STILL NOT FUNCTIONING, PLEASE CALL TECHNICAL SERVICE AT 1-800- 334-3393.