23
Operational Conditions
SMELLY WATER
In each glass-lined water heater there is installed one anode
rod (see parts section) for corrosion protection of the tank.
Certain water conditions will cause a reaction between this
rod and the water. The most common complaint associated
with the 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 of 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
corrosion protective action of the anode.
Smelly water may be eliminated or reduced in some water
heater models by replacing the anode rod with one of less
active material, and then chlorinating the water heater tank and
all hot water lines.
Call Maytag Customer Service at
1-800-788-8899 for an authorized servicer for further
information concerning an anode replacement kit #66001068
and this chlorination treatment
.
If smelly water persists, after anode replacement and
chlorination treatment, we can only suggest that continuous
chlorination and filtering conditioning equipment be considered
to eliminate the water problem.
Do not remove the anode leaving the tank unprotected. By
doing so, all warranty on the water heater tank is voided.
“AIR” IN HOT WATER FAUCETS
HYDROGEN GAS: Hydrogen gas can be produced in a hot
water system that has not been used for a long period of time
(generally two weeks or more). Hydrogen gas is extremely
flammable and explosive. To prevent the possibility of injury
under these conditions, we recommend the hot water faucet
be opened for several minutes at the kitchen sink before any
electrical appliances which are connected to the hot water
system are used (such as a dishwasher or washing machine).
If hydrogen gas is present, there will probably be an unusual
sound similar to air escaping through the pipe as the hot water
faucet is opened. There must be no smoking or open flame
near the faucet at the time it is open.
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.
NOTE:
If your water heater is connected to an “Off Peak” Clock,
and uses the “3 wire lead” wiring diagram in the “Wiring
Diagram” section, then the water heater will have a high limit
on both the upper and lower thermostats. Follow the instructions
to reset the high-limit behind the upper and lower access panels.
1. Before beginning, turn “OFF” electrical power supply to the
water heater.
FIGURE 43.
2. Remove the two screws securing the access panel and
remove panel.
3. Remove the insulation cap with handle to expose the terminal
cover.
4. Reset the high limit by pushing in the red button marked
“RESET”.
FIGURE 44.
