Troubleshooting; Start Up Conditions; Thermal Expansion; Strange Sounds - Maytag HE21240S User Manual

Troubleshooting
Start Up Conditions
THERMAL EXPANSION
Smelly water may be eliminated or reduced in some water heater
models by replacing the anode(s) with one of less active material,
Water supply systems may, because of such events as high line and then chlorinating the water heater tank and all hot water
pressure, frequent cut-offs, the effects of water hammer lines. Call Mayrag Customer Service at 1-800-788-8899 for an
among others, have installed devices such as pressure reducing authorized servicer for further information concerning an Anode
valves, check valves, back flow preventers, etc...to control Replacement Kit #66001068 and this Chlorination Treatment.
these types of problems. When these devices are not equipped
with an internal by-pass, and no other measures are taken, the If the smelly water persists after the anode replacement and chlo-
devices cause the water system to be closed. As water is heat- rination treatment, we can only suggest that continuous chlorina-
ed, it expands (thermal expansion) and closed systems do not tion and fdteting conditioning equipment be considered to elimi-
allow for the expansion of heated water, nate the water problem.
The water within the water heater tank expands as it is heated Do not remove the anode leaving the tank unprotected. By
and increases the pressure of the water system. If the relieving doing so, all warranty on the water heater tank is voided.
point of the water heater's temperature-pressure relief valve is
reached, t hevalvewillrelievetheexcess pressure. T hetemper-
"AIR"IN HOT WATER FAUCETS
ature-pressure relief valve is not intended for the constant
refiefofthermal expansion. This is an unacceptable condition
A WARNING
and must be corrected.
HYDROGEN GAS: Hydrogen gas can be produced in
a hot water system that has not been used for a
It is recommended that any devices installed which could create long period of time (generally two weeks or more).
a closed system, have a by-pass and/or the system have an Hydrogen gas is extremely flammable and explo-
expansion tank to relieve the pressure built by thermal expan- sive. To prevent the possib_ity of injury under these
sion in the water system. Expansion tanks are available for conditions, we recommend the hot water faucet be
opened for several minutes at the kitchen sink
ordering through the Maytag Customer Service. Contact the
before any electrical appliances which are connect-
local water supplier and/or call Maytag Customer Service at
ed to the hot water system are used (such as a dish-
1-800-788-8899 for an authorized servicer for assistance in
washer or washing machine). If hydrogen gas is pre-
sent, there will probably be an unusual sound simi-
controlling these situations,
lar to air escaping through the pipe as the hot
water faucet is opened. There must be no smoking
STRANGE SOUNDS
or open flame near the faucet at the time it is open.
Possible noises due to expansion and contraction of some RUMBLING NOISE
metal parts during periods of heat-up and cool-down do not
represent harmfifl or dangerous conditions. In some water areas, scale or mineral deposits will build up on
your heating dements. This buildup will cause a rumbling
noise. Follow "Element Cleaning/Replacement" instructions
"-- "' 'uperavona=
Conditions
to clean and replace the elements.
SMELLYWATER HIGH TEMPERATURE SHUT OFF SYSTEM
In each glasslined water heater there is installed at least one anode The water heater has a high limit shut off system with a reset
rod (see parts section) for corrosion protection of the tank. burton located on the thermostat.
Certain water conditions will cause a reaction between this rod
and the water.The most common complaint associated with the Follow the resetting instructions which refer to the high limit
anode rod is one of a "rotten egg smell". This odor is derived from
hydrogen sulfide gas dissolved in the water. The smell is the result behind the access panel.
of four factors which must all be present for the odor to develop: NOTE: If your water heater is connected to an "OFF
a. a concentration of sulfate in the supply water. PEAK" clock, and uses the "3 wire lead" wiring diagram in
b. little or no dissolved oxygen in the water, the "WiringDiagram" section, then thewaterheaterwill
c. a sulfate reducing bacteria within the water heater. (This have a M-limit on both the upper and lower thermostats.
harmless bacteria is non-toxic to humans.) Follow the instructions to reset the hi-limit behind the
d. an excess of active hy&ogen in the tank. This is caused by upper and lowex access panels.
the corrosion protective action of the anode.
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