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1
Troubleshooting
Before you call for service....
Save time and money! Review the chart below first and you may not need to call for service.
CAUTION
For your safety, DO NOT attempt repair of electrical wiring, controls, heating elements or other
safety devices. Refer repairs to qualified service personnel.
Problem Possible Causes What To do
OPERATION AND PERFORMANCE
Not enough or no hot
water
Water temperature may
be set too low
• See the Water Temperature Adjustment and Water Heater
Capacity sections. (Pages 4 and 6)
Cold water inlet
temperature may be
colder during the winter
months
• This is normal. The colder inlet water takes longer to heat.
• Consider increasing the set temperature as described in
the Water Temperature Adjustment section.
Leaking or open hot
water faucets
• Make sure all faucets are closed.
Long runs of exposed
pipe, or hot water piping
on outside wall
• Insulate piping.
Dip tube damaged • Contact your local installer, plumbing contractor, or
previously agreed upon service agency.
A fuse is blown, circuit
breaker tripped, or
electric service to your
home may be interrupted
• Replace fuse or reset circuit breaker.
• Contact the local electric utility.
Inadequate wiring • See the Installation Instructions.
Manual reset high limit
(ECO)
• See the Safety Controls section, see page 5.
Water Connections to
unit reversed
• Correct piping connections.
Water is too hot Water temperature is set
too high
• See the Water Temperature Adjustment section.
Thermostat has failed • Contact your local installer, plumbing contractor, or
previously agreed upon service agency.
OTHER
Water dripping down the
outside of the heater
Hot/Cold water connections
or other parts have loosened
• Tighten the loose connections. This should only be done by a
qualified service person or plumbing contractor.
Relief valve producing
popping sound or
draining
Pressure buildup caused
by thermal expansion to a
closed system
• This is an unacceptable condition and must be corrected. See
Thermal Expansion section on page 12. Do not plug the relief
valve outlet. Contact a plumbing contractor to correct this.
Hot water has a rotten
egg or sulfur smell
Certain water supplies with
high sulfate content will react
with the anode rod that is
present in all water heaters
for corrosion protection of
the tank
• In certain cases, increasing the tank temperature to 140°F (60°C)
can reduce this odor issue. Reference the Water Temperature
Adjustment section of the Important Safety Information of this
manual for procedure and dangers of scalding water. Installation of
temperature limiting valves can be used to reduce risk of scalding.
TROUBLESHOOTING
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