Bradford White ES-2400-1-S-10 User manual

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. If problems still exist after
reading and carrying out the instructions in
this
mtoll free number below for assistance.
PH
1-800-334-3393
anual, contact Technical Service at the
ONE TOLL FREE
238-43141-00 Rev. 5/02

GENERAL
Water outlet/inlet (Top)
U.L. rating label Model # = Order Ref. #
Indicator
light
Out In
UP
Water outlet/inlet (Top)
Model # = Order Ref. #
light
UP
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.
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 6.
If the indicator light does not illuminate, turn to page 3.
Other possible situations turn to page 7.
2

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 unit will not heat unless sufficient water is flowing through the unit.
The minimum acceptable flow rate is about 0.5 gallons per minute (1/2
gpm). Measure the flow rate using the following procedure:
Fill a 1-gallon “milk” container and, using only water from the hot water
outlet, record the time (In seconds) required to fill. To calculate flow
rate, divide the number of gallons the container holds (In this case one
gallon) by the time required to fill.
e.g. If it takes 87 seconds to fill the container the flow rate would be:
Flow rate(gpm) = v/t x 60 = (1 gallon/87 sec.) x (60 sec./1 min.) = .69 gpm
Now, run the water with the faucet open fully. If the indicator light still does not
illuminate, then proceed to STEP THREE.
Aerator - Fits on the orifice of the faucet.
Male/female threaded adapter on top of
aerator.
Flow restrictor - (may be removed to
increase flow)
3

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.
0.5 gpm flow regulator
(The little black plug)
INLET
OUTLET
SP MODELS
UP
inlet filter
If the unit now operates with water flowing, call Technical Service at
1-800-334-3393. Describe what actions were taken and a selection of “flow
restrictors” will be sent to you to replace the one that was removed. This will allow
the unit to operate, but will also control the flow rate to provide the correct rise in
temperature.
If the unit still does not work proceed to step 4.
4

Ω
Set the meter to the single Ohms setting
Do not measure continuity, this will not work.
TheOhmSymbol
(The upside down horseshoe)
NOTE: BE SURE THE ELECTRICITY IS TURNED OFF TO THE UNIT
Remove the front cover of the unit. At the end of the black heater body there are
two threaded silver rods with brass nuts on them (Where the wires connect). Take a
reading of the ohms value between these two rods and write it down (See figure
below). If the reading is less then 20 ohms on the
single (Rx1) scale or the (Rx10) scale, then
the element is good, if it is much greater.
e.g. 10,000 ohms or if you get a reading on
the “Rx1k, you will need to replace the
element. To do this, contact Technical
Service at 1-800-334-3393 for replacement
elements (Please write down the
resistance value before contacting
Technical Service. This will be very useful
to us. Also, have the order ref. and serial
numbers for your unit available for
Technical Service).
STEP FOUR:
A multimeter / voltmeter is required
to perform the following test. VA
VA VA
DANGER!
TURN OFF THE CIRCUIT BREAKER BEFORE
PROCEEDING WITH THE NEXT TESTS
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 temperature should be observed.
Make sure the aerator supplied with the heater is attached to the faucet;
these are integral for proper performance of the unit. If the special aerator is
not included, call Technical Service at 1-800-334-3393 and one will be
shipped to you. 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.
STEP THREE:
Proceed to page five and follow STEP FOUR.
6

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).
The correct mounting holes
for the PCB on an “ES,EFC,
or EFT” model.
Board mounted in correct
position
Inlet filter
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 that may prevent
adequate water flow.
IF HAVING CARRIED OUT ALL THE TESTS LISTED ABOVE AND THE WATER
HEATING UNIT IS STILL NOT FUNCTIONING PROPERLY, PLEASE CALL
TECHNICAL SERVICE AT 1-800-334-3393.
PLEASE HAVE THE FOLLOWING INFORMATION AVAILABLE:
1) ORDER REF. NUMBER (Located on U.L. rating label on the front cover of unit).
2) SERIAL NUMBER (Inside unit on back plate).
7