EasyManuals Logo

A.O. Smith DELC-30 User Manual

A.O. Smith DELC-30
32 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #21 background imageLoading...
Page #21 background image







No Hot Water
The most likely reasons for an electric
water heater to produce NO hot water
are:
No electric power—a common
problem with new installaons.
Burned out upper element (Dry Fired)
— a common problem with new
installaons.
Tripped Energy Cut O (red buon on
upper thermostat).
The water heater’s inlet and outlet
connecons are reversed (usually only
in new installaons).
Broken upper thermostat (or wiring).
A leak in the hot water side of the
plumbing system that exceeds the
water heater’s heang capacity and
makes it appear that the water heater
is producing lile to no hot water.


1

 No hot
water is oen caused by a
problem with the electrical wiring or
circuit breakers. You’ll need a non-con-
tact circuit tester. Follow these
guidelines:
Locate the water heaters circuit
breaker and turn it o (or remove the
circuit’s fuses).
Open the electrical juncon box.
Idenfy the two power wires. The
power wires are usually black/black or
black/red—the green or copper wire
is the ground wire.
Figure 21 - Use a non-contact circuit tester to
check for electrical power.
Turn the circuit breaker back on (or
install the fuses) and check the power
on both incoming power wires using a
non-contact circuit tester.
Turn the power o and close the
electrical juncon box.
If the water heater is not geng power,
contact a qualied person to have the
wiring or circuit breakers checked.
2

 If the water heater is
geng electrical power, check
to see if the upper heang element has
burned out. If the upper element is
burned out, you’ll have no hot water. To
check the upper element, you’ll need a
mulmeter capable of reading
resistance.
Turn the power OFF at the circuit
breaker or remove fuses.
Open the electrical juncon box.
Remove the insulaon to access
the upper thermostat and heang
element.
3



 (


With the electrical power o, remove
the two power wires from the upper
heang element.
Figure 22 - Use a multimeter to check the
resistance of the upper heating element.
4


 Measure the
resistance between the two screw
terminals on the upper heang
element. A good element will have a
resistance between 5 and 25 Ohms. If
the resistance is:
 Replace the
element (see the Roune Maintenance
secon on page 25). On a new water
heater, a burned out upper heang
element is almost always caused by
turning the power on before the tank
was completely full of water (Dry Fire).
(See Step 8 in the Installaon secon.)
 Reaach the power
wires, making sure the wires are in
good condion and the connecons
are clean and ght. Next, check the
following:
Commercial Electric Water Heater Use and Care Guide • 21
TROUBLESHOOTING
TROUBLESHOOTING

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the A.O. Smith DELC-30 and is the answer not in the manual?

A.O. Smith DELC-30 Specifications

General IconGeneral
BrandA.O. Smith
ModelDELC-30
CategoryWater Heater
LanguageEnglish

Related product manuals