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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
m
anual, contact Technical Service at the
toll free number below for assistance.
PH
ONE TOLL FREE
1-800-334-3393
Single Point
"ES"- MODELS
ES-2400-1-S-10
ES-3000-1-S-10
ES-3500-1-S-10
ES-3000-3-S-10
ES-4100-2-S-10
ES-3500-4-S-10
ES-4100-5-S-10
ES-3000-5-S-10
this
120V
120V
120V
208V
208V
240V
277V
277V
238-43141-00 Rev. 5/02
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Summary of Contents for Bradford White ES-2400-1-S-10
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Page 1: Troubleshooting Guide
TROUBLESHOOTING GUIDE ELECTRIC INSTANTANEOUS TANKLESS WATER HEATER Single Point “ES”- MODELS ES-2400-1-S-10 120V ES-3000-1-S-10 120V ES-3500-1-S-10 120V ES-3000-3-S-10 208V ES-4100-2-S-10 208V ES-3500-4-S-10 240V ES-4100-5-S-10 277V ES-3000-5-S-10 277V All information necessary to troubleshoot this water heating unit is contained in this fully illustrated guide. - Page 2 GENERAL Water outlet/inlet (Top) Water outlet/inlet (Top) U.L. rating label Model # = Order Ref. # Model # = Order Ref. # Indicator light light Serial number This is how your “ES” model should look when mounted correctly on the wall. Any other mounting configuration will prevent the unit from operating properly.
- Page 3 The indicator light does not illuminate (When the hot water faucet is fully opened): STEP ONE: Is the circuit breaker switched ON at the main circuit breaker panel? Go to Step two Run water at the hot water faucet, for a couple of minutes, before turning on the circuit breaker.
- Page 4 STEP THREE: In the brass outlet fitting there is a flow restrictor, this is a little black plug. Shut the water off to the unit and then remove the plug from the fitting. Open the faucet fully to see if the light illuminates with water flowing through the unit.
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Page 5: Note: Be Sure The Electricity Is Turned Off To The Unit
STEP FOUR: 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 6 The indicator light illuminates but water is not heated or the water temperature is too low: STEP ONE: The water flow is too high. Reduce the water flow using the faucet. With experimentation, an increase in temperature should be observed. Make sure the aerator supplied with the heater is attached to the faucet;...
- Page 7 Other possible solutions: STEP ONE: NOTE: BE SURE ELECTRICITY IS TURNED OFF BEFORE PROCEEDING. Make sure the printed circuit board is mounted in the correct position. This is the top set of mounting holes (See diagram below). Failure to mount the PCB in the correct position will cause element burn out and may cause further damage to the unit (This board may have been incorrectly positioned if serviced previously).