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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
OPERATION AND PERFORMANCE
Not enough or no hot
water
Water is too hot
OTHER
Rumbling noise
Water dripping down the
outside of the heater
Relief valve producing
popping sound or
draining
Hot water has a rotten
egg or sulfur smell
16
Possible Causes
Water temperature may be
set too low
Cold water inlet temperature
may be colder during the
winter months
Leaking or open hot water
faucets
Long runs of exposed pipe,
or hot water piping on
outside wall
Dip tube damaged
A fuse is blown, circuit
breaker tripped, or electric
service to your home may be
interrupted
Inadequate wiring
Manual reset high limit (ECO) • See the Safety Controls section, see page 5.
Water Connections to unit
reversed
Water temperature is set too
high
Thermostat has failed
Water conditions in your
home caused a buildup of
scale or mineral deposits on
the heating elements
Hot/Cold water connections
or other parts have loosened
Pressure buildup caused
by thermal expansion to a
closed system
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
What To do
• See the Water Temperature Adjustment and Water Heater
Capacity sections (see pages 4 and 6).
•
This is normal. The colder inlet water takes longer to heat.
• Consider increasing the set temperature as described in the Water
Temperature Adjustment section.
• Make sure all faucets are closed.
• Insulate piping.
• Contact your local installer, plumbing contractor, or previously
agreed upon service agency.
• Replace fuse or reset circuit breaker.
• Contact the local electric utility.
• See the Installation Instructions.
• Correct piping connections.
• See the Water Temperature Adjustment section.
• Contact your local installer, plumbing contractor, or previously
agreed upon service agency.
• Remove and clean the heating elements. This should only be
done by a qualified service person or plumbing contractor.
• Tighten the loose connections. This should only be done by a
qualified service person or plumbing contractor.
• This is an unacceptable condition and must be corrected. See
Thermal Expansion section on page 14. Do not plug the relief
valve outlet. Contact a plumbing contractor to correct this.
• 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.
49-6000248 Rev. 1
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