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Troubleshooting Guide
Operational Conditions
SMELLY WATER
In each water heater there is installed at least one anode rod for
corrosion protection of the tank. Certain water conditions will
cause a reaction between this rod and the water. The most com-
mon complaint associated with the anode rod is one of a "rotten
egg smell". This odor_....is derived from hydro_gen sulfide gas dis-
solved in the water. I he smell is the result o_four factors which
must all be present for the odor to develop:
a. a concentration of sulfate in the supply water.
b. little or no dissolved oxygen in the water.
c. a sulfate reducing bacteria within the water heater. (This
harmless bacteria is non-toxic to humans.)
d. an excess of active hydrogen in the tank. This is caused
by the corrosion protective action of the anode.
The anode rod in a new glasslined water heater works rapidly to
protect the tank. After a period of time the anode action slows
and the odor may dissipate.
A smelly water condition (Rotten Egg Odor) in your Compact
Electric water heater can, in most cases, be resolved or reduced
with the addition of sufficient amounts of chlorine to eliminate
the bacterial growth inside the tank. This can be accomplished
through the installation of a chlorine feeder to the system or the
periodic flushing of the water heater with "Chlorox" as needed.
On systems where the odor is mild and does not occur too
rapidly, a monthly flushing may be sufficient. In more severe
cases, a system feeder wouldbe more appropriate.
RUMBLING NOISE
In some water areas, scale or mineral deposits will build up on
your heating elements. This buildup will cause a rumbling noise.
Follow "Element Cleaning/Replacement" instructions to clean
and replace the elements.
HIGH TEMPERATURE SHUT OFF SYSTEM
The water heater has a high limit shut off system with a reset
button located on the thermostat.
Follow the resetting instructions which refer to the high limit
behind the access panel.
• Before beginning, turn "OFF" electrical power supply to the
water heater.
"AIR" IN HOT WATER FAUCETS
_,WARNING
HYDROGEN GAS: Hydrogen gas can be produced in a
hot water systemthat hasnot been used for a long peri-
od of time (generallytwo weeksor more). Hydrogen gas
is extremely flammable and explosive. To prevent the
possibility of injury under these conditions, we recom-
mend the hot water faucet be opened for several min-
utes at the kitchen sink before any electrical appliances
which are connected to the hot water system are used
(such as a dishwasheror washing machine). If hydrogen
gas is present, there will probably be an unusual sound
similar to air escapingthrough the pipe as the hot water
faucet is opened. There must be no smoking or open
flame near the faucet at the time it isopen.
_,WARNING
HAZARD OF ELECTRICAL SHOCK! Before removing
any accesspanels or servicing the water heater, make
sure the electrical supplyto the water heater isturned
"OFF". Failure to do this could result in DEATH, SERI-
OUS BODILY INJURY,OR PROPERTY DAMAGE.
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