Maytag MAH5500BWW Service Manual - Page 141

ELECTRICAL TESTS, Grounded Components, Water Valve Test, Door Lock Test - repairs

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SECTION 4. ELECTRICAL COMPONENTS & TESTING ELECTRICAL TESTS Door Lock Test 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) Fabric Softner Bleach Cold Hot 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. 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 Section 4. Electrical Components & Testing ©2001 Maytag Appliances Sales Company 4-1

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Section 4±
Electrical Components & Testing
4-1
16010486
(16008373-05)
Revised 02/01
©2001 Maytag Appliances Sales Company
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)
The thermistor is on NTC and will drop in
resistance when the temperature
increases±
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
±
Fabric Softner
Bleach
Cold
Hot
Thermistor
4 Coil Water Valve
Figure 4-1