ELECTRICAL TESTS
Warning - Always shut off electrical power to the unit before beginning any service repair procedures.
G r o u n d e d C o m p o n e n t s
When performing service diagnostics, re -
placements | and repairs, always check | to de- | |
t e r m i n e w h e t h e r a l l | g r o u n d w i r e s l i n k i n g | ||
panel and | components | are reattached | if |
r e m o v e d . |
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Voltage Checks
Generally, these checks will consist of taking readings at the wall receptacle to determine the availability of voltage to the product. Volt- age checks on individual components of a product are not recommended due to the possibility of electrical shock. Component part testing is best accomplished through conti- nuity checks with an Appliance Test Meter
(See Electrical Test Equipment).
NOTE: Use of the meter on voltage higher than the indicated range may cause perma- nent damage to the meter. To prevent dam- age, first select the highest range and then lower the range for readings which fall within the lower scale.
Set up meter for use as follows:
1.Turn selector knob to desired meter func- tion and appropriate range.
2. Plug black lead into socket marked black
3.Plug red lead into socket marked red (+).
4.Place test leads into receptacle to deter- mine voltage available.
1 6 0 0 8 3 7 3 - 0 1
Water Valve Test
Check the water valve for electrical continu-
ity. This check should be made with the elec- trical supply disconnected from the washer.
Remove the wire harness from the water valve terminals and place the ohm meter probes on the terminals of the water valve. The water valve solenoid coil should have a resistance between 500 - 1000 ohms . If no ohms are shown on the display of the electrical test meter, the solenoid coil has an open winding and the valve should be replaced. The ther- mistor in the water valve changes in resistance in direct relationship to water temperatures. To monitor the performance of the thermistor, run a partial hot water fill and check the ohm resistance of the thermistor circuit. Then, run a cold water fill and measure the resistance again. There should be a notable difference in the resistance readings. To check the ohm resistance, pull the P2 wire harness connec- tor off the machine control and locate the P2(5) and P2(6) leads in the connector
(Figure
Wax Motor Check - Door Lock M e c h a n i s m
Check the wax motor for proper resistance.
This check should be made with the electrical
supply disconnected from the washer. Re- move the wire harness from the wax motor terminals and place the ohm meter probes on the terminals of the wax motor. The wax mo- tor should have a resistance of approximately 1900 ohms at room temperature. To check wax motors through console, see section:
Machine Control page 2-5.
SECTION 2. ELECTRICAL COMPONENTS & TESTING 2 - 2
© 1998 Maytag Corporation
