Troubleshoot

ManualsBrandsBradford White ManualsCommercial1. KwickShot ® Flow Controlled Tankless Electric (TEF)

Table Of Contents

NOTE: BE SURE THE ELECRICITY IS TURNED OFF TO THE UNIT
- CHECKING THERMOSTATIC CIRCUIT BOARD

TROUBLESHOOTING GUIDE

ELECTRIC INSTANTANEOUS TANKLESS WATER HEATER

EFT-5500-4-S-10 240V

EFT-7500-4-S-10 240V

EFT-9500-4-S-10 240V

EFT-8300-4-S-10 208V

EFT-6000-4-S-10 277V

EFT-8000-4-S-10 277V

EFT-9000-4-S-10 277V

EFT-10000-4-S-10 277V

“THERMOSTATIC”

EFT MODELS

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

238-43142-00 Rev 3/12/02

Summary of content (7 pages)

PAGE 1
TROUBLESHOOTING GUIDE ELECTRIC INSTANTANEOUS TANKLESS WATER HEATER “THERMOSTATIC” EFT MODELS EFT-5500-4-S-10 240V EFT-7500-4-S-10 240V EFT-9500-4-S-10 240V EFT-8300-4-S-10 208V EFT-6000-4-S-10 277V EFT-8000-4-S-10 277V EFT-9000-4-S-10 277V EFT-10000-4-S-10 277V All information necessary to troubleshoot this water heating unit is contained in this fully illustrated guide.
PAGE 2
GENERAL UP Serial number Indicator light U.L. rating label Model # = Order Ref. # Out In Water outlet/inlet (Bottom) This is how your EFT thermostatic model should look when mounted correctly on the wall. Any other mounting configuration will prevent the unit from operating properly. If the unit is mounted correctly and still does not produce hot water, then 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.
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? YES Go to Step two NO Run water at the hot water faucet, for a couple of minutes, before turning on the circuit breaker. Then turn on the circuit breaker at the main circuit breaker panel. STEP TWO: The heating elements will not energize unless sufficient water is flowing through the unit. The minimum acceptable flow rate is 0.
PAGE 4
STEP THREE: A multimeter / voltmeter is required to perform the following test V A Ω WARNING! TURN OFF THE CIRCUIT BREAKER BEFORE PROCEEDING WITH THE NEXT TESTS. Set the meter to the single ohms setting. Do not measure continuity, this will not work. Ω The Ohm Symbol (The upside down horseshoe) NOTE: BE SURE THE ELECRICITY IS TURNED OFF TO THE UNIT Remove the front cover of 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 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. SCALD INJURY CAN OCCUR FROM THE HOT WATER. STEP TWO: Make sure the unit is connected to the voltage supply specified on the U.L. rating label located on the front cover of the unit.
PAGE 6
Other possible solutions: NOTE: BE SURE ELECTRICITY IS TURNED OFF BEFORE PROCEEDING STEP ONE: 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 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). The correct mounting holes for the PCB on an “ES,EFC, EFT” model.
PAGE 7
WARNING! TURN OFF THE CIRCUIT BREAKER BEFORE PROCEEDING WITH THE NEXT TESTS. CHECKING THERMOSTATIC CIRCUIT BOARD If the LED on the circuit board flashes one time very quickly when the water is switched ON then: 1) Turn “OFF” the power to this unit and all other units that may feed hot water to this unit. 2) Be sure that this unit is fed with cold water only. This unit must not be fed with pre-heated water when performing this test. 3) There are six thin leads connected to the printed circuit board.