FOR SERVICE TECHNICIAN’S USE ONLY
PART NO. W10156037A
TECH SHEET - DO NOT DISCARD
PAGE 4
6.
Access the machine control electronics without
disconnecting any wiring to the control board.
See Accessing & Removing the Electronic
Assemblies, page 9.
7.
With an ohmmeter, check for continuity between
the L1 terminal of the plug (found in step 5) and
P9-2 (black wire) on the machine control board.
See figure 16, page 9.
➔
If there is continuity, go to step 8.
➔
If there is no continuity, check that wires to
the terminal block are mechanically secure. If
so, replace the main wire harness and test the
dryer.
8.
Check for continuity between the neutral (N)
terminal of the plug and P8-3 (white wire) on the
machine control board.
➔
If there is continuity, go to step 9.
➔
If there is no continuity and the mechanical
connections of the wire are secure, replace
the main wire harness.
9.
Visually check that the P5 connector is inserted
all the way into the machine control electronics.
10.
Visually check that the user interface assembly
is properly inserted into the front console.
11.
If both visual checks pass, replace the user
interface assembly.
12.
Plug in dryer or reconnect power.
13.
Perform the Console Buttons and Indicators
Diagnostic test, page 1, to verify repair.
14.
If indicators still do not light, the machine
control electronics has failed:
➔
Unplug dryer or disconnect power.
➔
Replace the machine control electronics.
➔
Plug in dryer or reconnect power.
➔
Perform the Console Buttons and Indicators
Diagnostic test, page 1 to verify repair.
TEST #2
Machine Control
Power Check
This test is used to determine if power is present at
the machine control electronics.
NOTE:
The drum light is controlled by the machine
control on all models.
1.
Plug in dryer or reconnect power.
2.
Open the door.
➔
If the drum light illuminates, then power is
present at the machine control. Go to
TEST #6, page 8.
➔
If the drum light fails to illuminate, do not
assume the machine control electronics
needs replacement. Several conditions may
cause the drum light not to illuminate,
including a bad bulb. If the drum light does
not illuminate, go to TEST #1, at left.
See Removing the Back Panel,
page 11, to access:
■
■
■
■
■
■
■
■
■
Thermal Cut-off
Drum Light Assembly
Water Nozzle (Steam Models)
Inlet Thermistor/High Limit
Thermostat
Heater
Moisture Sensor (Behind Strips)
Water Valve Assembly (Steam
Models)
Thermal Fuse
Exhaust Thermistor
See Removing the Front Panel/Drum
Assembly, page 10, to access:
■
■
Drive Motor
Belt Switch
See Accessing & Removing the Electronic
Assemblies, page 10, to access:
■
■
User Interface Assembly
Machine Control Electronics
Door
Switch
Moisture
Sensor
Strips
Figure 2.
Component locations.
TROUBLESHOOTING TESTS
NOTE:
These checks are done with the dryer
unplugged or disconnected from power.
TEST #1
Supply Connections
This test should only be done after confirming proper
voltage at the outlet.
1.
Unplug dryer or disconnect power.
2.
Remove the cover plate from the back of the
dryer. See figure 3.
3.
Make sure the power cord is securely fastened to
the terminal block.
4.
With an ohmmeter, check for continuity between
the neutral (N) terminal of the plug and the center
contact on the terminal block. See figure 4.
➔
If there is no continuity, replace the power
cord and test the dryer.
➔
If there is continuity, go to step 5.
5.
In a similar way, check which terminal of the plug
is connected to the left-most contact on the
terminal block and make a note of it. This will be
L1 (black wire) in the wiring diagram. See figure 4
above and the appropriate wiring diagram. See
pages 11 and 12.
➔
When this is found, go to step 6.
➔
If neither of the plug terminals have continuity
with the left-most contact of the terminal
block, replace the power cord and test the
dryer.
Remove Screw
Cover
Plate
Figure 3.
Remove the cover plate.
COM
N
L1
Power Cord
Plug
Terminal Block
Figure 4.
Plug-to-terminal connections.
