Section 4. Electrical Components & Testing - Maytag Neptune MAH3000 Service Manual

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SECTION 4. ELECTRICAL COMPONENTS & TESTING
ELECTRICAL TESTS
Warning - Always shut off
electrical power to the
washer before beginning
any service repair
procedures.
Grounded Components
When performing service diagnostics,
replacements and repairs, always check to
determine whether all ground wires
linking panel and components are
reattached if removed.
Water Valve Test
The water valve test is similar to the test
outlined in the 16008373 manual, except,
to check the ohm resistance of thermistor,
pull the P3 wire harness connector off the
machine control and locate the P3(6) and
P3(7) leads in the connector on the
machine control board. Note the
thermistor has been relocated on the
valve to the outlet of the valve. (See
Figure 4-1)
Bleach
Cold
Hot
Thermistor
4 Coil Water Valve
Figure 4-1
The thermistor is on NTC and will drop in
resistance when the temperature
increases.
16010486 (16008373-05)
Revised 02/01
Fabric Softner
Section 4. Electrical Components & Testing
©2001 Maytag Appliances Sales Company
Door Lock Test
The door lock can be verified by the
following procedure.
LED Model
1. Place the washer into Service Mode.
(See Section 2; Accessing Service
Mode)
2. Advance to the Board Output Test and
press Max Extract to Lock the door
and Extra Rinse to Unlock the door.
LCD Model
1. Place the washer into Service Mode.
(See Section 2; Accessing Service
Mode)
2. Select Service Tests, then Quick Spin
Tests to actuate the door lock
mechanism. Hit Cancel to unlock the
door.
Note: The relay on the control board
for the door lock mechanism is
disabled if the motor control board
indicates the spinner speed is > 7
RPM.
For more information related to door lock
mechanism, please refer to Section 2:
Miscellaneous; Door Lock Philosophy.
4-1

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