Electrical Tests; Grounded Components; Voltage Checks; Water Valve Test - Maytag Neptune MAH3000 Service Manual

E L E C T R I C A L T E S T S
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 .

Voltage Checks

Generally, these checks will consist of taking
readings at the wall receptacle to determine
the availability of voltage to the product.
age checks on individual components of a
product are not recommended due to the
possibility of electrical shock.
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.
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.
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.
valve solenoid coil should have a resistance
between 500-1000 ohms.
shown on the display of the electrical test
meter, the solenoid coil has an open winding
and the valve should be replaced.
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.
a cold water fill and measure the resistance
again.
in the resistance readings.
resistance, pull the P2 wire harness connec-
tor off the machine control and locate the
Volt-
P2(5) and P2(6) leads in the connector
(Figure 2-3).
Component part
Wax Motor Check - Door Lock
M e c h a n i s m
Check the wax motor for proper resistance.
To prevent dam-
This check should be made with the electrical
supply disconnected from the washer.
move the wire harness from the wax motor
terminals and place the ohm meter probes on
the terminals of the wax motor.
tor should have a resistance of approximately
1900 ohms at room temperature.
wax motors through console, see section:
Machine Control page 2-5.
© 1998 Maytag Corporation
This check should be made with the elec-
There should be a notable difference
SECTION 2. ELECTRICAL COMPONENTS & TESTING
The water
If no ohms are
The ther-
Then, run
To check the ohm
Re-
The wax mo-
To check
2 - 2