Maytag HE2950S manual Troubleshooting, Start Up Conditions, Operational Conditions, Strange Sounds

Troubleshooting

Start Up Conditions

THERMAL EXPANSION

Water supply systems may, because of such events as high line pressure, frequent cut-offs,the effects of water hammer among others, have installed devices such as pressure reducing

valves, check valves, back flow preventers, etc...to control these types of problems. When these devices are not equipped

with an internal by-pass, and no other measures are taken, the devices cause the water system to be closed. As water is heat- ed, it expands (thermal expansion) and closed systems do not allow for the expansion of heated water,

The water within the water heater tank expands as it is heated

and increases the pressure of the water system. If the relieving point of the water heater's temperature-pressure reliefvalve is

reached, the valve will relieve the excess pressure. The temper- ature-pressure relief valve is not intended for the constant

relief of thermal expansion. This is an unacceptable condition and must be corrected.

It is recommended that any devices installed which could create a closed system, have a by-pass and/or the system have an expansion tank to relieve the pressure built by thermal expan- sion in the water system. Expansion tanks are available for

ordering through the Maytag Customer Service. Contact the local water supplier and/or call Maytag Customer Service at

1-800-788-8899 for an authorized servicer for assistance in controlling these situations,

STRANGE SOUNDS

Possible noises due to expansion and contraction of some metal parts during periods of heat-up and cool-down do not

represent harmful or dangerous conditions.

Smelly water may be eliminated or reduced in some water heater models by replacing the anode(s) with one of less active material, and then chlorinating the water heater tank and all hot water fines. Call Maytag Customer Service at 1-800-788-8899 for an authorized servicerfor further information concerning an Anode Replacement Kit #66001068 and this Chlorination Treatment.

If the smelly water persists after the anode replacement and chlo- rination treatment, we can only suggest that continuous chlorina- tion and filtering conditioning equipment be considered to elimi- nate 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

_,WARNING

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 explo- sive. 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 connect- ed to the hot water system are used (such as a dish-

washer or washing machine). If hydrogen gas is pre- sent, there will probably be an unusual sound mmi-

lar 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

Operational Conditions		noise. Foliow"Element			Cleaning/Replacement"instructions
		to clean and replace the elements.
SMELLY WATER		HIGH TEMPERATURE				SHUT OFF			SYSTEM
In each glasslined water heater there is installed at least one anode
rod (see parts section) for corrosion protection of the tank.		The water heater has a high				limit shut		offsystem		with a reset
Certain water conditions will cause a reaction between this rod		button	located	on the thermostat.
and the water. The most common complaint associated with the
anode rod is one of a "rotten egg smell". This odor is derived from		Follow	the resetting instructions				which	refer to the high			limit
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:
a.	a concentration of sulfate in the supply water.	NOTE:	Ifyour water		heater is connected				to an	"OFF
b.	little or no dissolved oxygen in the water.	PEAK"	clock, and uses the			"3 wire lead" wiring diagram					in
c.	a sulfate reducing bacteria within the water heater. (This	the "Wiring Diagram"			section, then the water heater will
	harmless bacteria is non-toxic to humans.)	have a hi-limit		on both	the upper and lower thermostats.
d.	an excess of active hydrogen in the tank. This is caused by	Follow	the instructions		to reset		the hi-limlt		behind the
	the corrosion protective action of the anode,	upper and lower access panels.
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