Thermistor Controlled Water Valve; Water Valve Removal - Maytag LAT2300 Service Manual

• Check screens in inlet hoses at
faucets and at inlet of water valve. Be
sure they are not plugged.
• Check water level control. Be sure
the air dome tube is attached to the
the control and the tub. For electrical
checks, see Electrical Trouble-
shooting Section.
• Check water valve coils for continuity.
These checks should be made with
the electrical supply disconnected
from the washer The Maytag appli-
ance test meter scale is marked open
and closed to indicate continuity or an
incomplete circuit. If there is an
incomplete circuit, there is either a
bad coil or a wiring problem. If a coil
is bad, the water valve should be
replaced.
Thermistor Controlled Water Valve
On microprocessor models the washer
is equipped with a thermistor controlled
water valve. The controller attempts to
get the temperatures in the wash tub to
follow the following chart as accurately
as possible. There are many factors
which can contribute to the temperature
in the wash tub, so these temperatures
may vary, depending on the conditions
of the household. The controller first
determines the temperature by turning
on the cold water valve, both water
valves and then the hot water valve.
The calibration of each valve will take
approximately 15 seconds. Then the
controller will determine which ratio of
hot, warm and cold to use to fill to the
target temperature. If the thermistor
fails or is disconnected, the calibration
phase will not have the hot water turned
on, and will default to a 15 seconds
each of hot-warm for energy hot, both
water valves on for warm and 15
seconds each of cold-warm for energy
warm.
Water Temper- Description Target Temper-
ature
ature
5 hot
house hot
water
4
energy hot 120 0
Fahrenheit
3 warm 120
0
Fahrenheit
2 energy cold 80 0 Fahrenheit
1 cold
house cold
water
Water Valve Removal
1. Disconnect unit from power supply.
Shut off both hot and cold water
faucets.
2. Slide the washer away from wall.
Place a pan or bucket below the
hoses directly under the water
valve. Remove both hoses catching
excess water in pan.
3. Remove the 5/16" screw that holds
the bracket to the cabinet.
4. Loosen the clamp and remove the
outlet hose from the valve. Some
water will come out; catch in a pan.
NOTE wire colors on the valve termi-
nals and remove the wires.
5. Remove the two 5/16" screws
holdi ng the valve to the bracket.
6. Pivot out until flange clears back
and lift up to disengage the bracket
from the slot on the back panel.
16001145
SECTION 3. WASHER - SERVICE PROCEDURES
3-25
©1994 Maytag Corporation