Test Procedures - Whirlpool W10441082B Manuel D'instructions

FOR SERVICE TECHNICIAN'S USE ONLY

TEST PROCEDURES

IMPORTANT: The following procedures
may require the use of needle probes
to measure voltage. Failure to use needle
probes will damage the connectors. To
ease the process of measuring voltage
and resistance, test points for each pin are
accessible through the slots in the plastic
beneath each ACU connector.
TEST #1: ACU Power Check
This test checks for incoming and outgoing power
to and from Appliance Control Unit (ACU). This test
assumes that proper voltage is present at the outlet.
1. Unplug washer or disconnect power.
2. Remove top panel to access the
machine electronics.
3. Visually check that all connections to the
interference filter (IF) are securely connected.
See Figure 3, below.
4. Visually check that all connections to the
ACU are fully inserted. See Figure 4, below.
5. If both visual checks pass, go to step 6.
Filter Output - Line (PK)
Filter Input - Power Cord Line (BK)
Figure 3 - Interference Filter (IF)
J14-For future usage
J12-Hot 1 & Cold 1 Valves
J2-Cold 2 Valve
J7-Steam Valve
Locking Clip
J10-Motor
For future usage
J8-AC In (IF filter)
J9-Door Lock
J15-Heater
Figure 4 - Appliance Control Unit (ACU)
DO NOT REMOVE OR
J1-Vent
J17-Drain Pump
DESTROY
6. Plug in washer or reconnect power.
7. With a voltmeter set to AC, check for line
voltage at the input of the interference filter.
See Figure 3.
 If line voltage is present, go to step 8.
 If line voltage is not present, verify the
continuity of the power cord. If it fails the
continuity check, replace the power cord.
8. With a voltmeter set to AC, check for line
voltage at the output of the interference filter.
See Figure 3.
 If line voltage is present, go to step 9.
 If line voltage is not present, replace the
interference filter.
9. With a voltmeter set to AC, check for input
line voltage to the ACU across pins 1 and 2 of
connector J8 AC In (IF filter). See Figure 4.
 If line voltage is present, go to step 10.
 If line voltage is not present, check
harnesses and connections between the
filter and the ACU. Visually inspect inside
connector housing for bent or damaged
terminals. Repair as necessary.
Filter Output - Neutral (PK)
Filter Input - Power Cord Neutral (WT)
J18-For future usage
J19-User Interface (UI)
J4-For future usage
J28-Water Level Sensor
J5-Door Switch/
Temperature Sensor
Service LED
For engineering use only
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