For Service Technician Use Only
DIAGNOSTICS and TROUBLESHOOTING
(
Cont.
)
Whirlpool
®
24" Compact Condensing Dryer
n
2-3
Diagnostic Guide
Before servicing, check the following:
n
n
Make sure there is power at the wall outlet.
Make sure there is power at the wall outlet.
n
n
Has a household fuse blown or circuit breaker tripped? Was a
Has a household fuse blown or circuit breaker tripped? Was a
regular fuse used? Inform customer that a time-delay fuse is
regular fuse used? Inform customer that a time-delay fuse is
required.
required.
n
n
Make sure the dryer fan, lint screen, and secondary lint filter
Make sure the dryer fan, lint screen, and secondary lint filter
are clear of lint and obstructions.
are clear of lint and obstructions.
n
n
All tests/checks should be made with a VOM (volt-ohm-
All tests/checks should be made with a VOM (volt-ohm-
milliammeter) or DVM (digital-voltmeter) having a sensitivity
milliammeter) or DVM (digital-voltmeter) having a sensitivity
of 20,000 Ω per volt DC or greater.
of 20,000 Ω per volt DC or greater.
n
n
Resistance checks must be made with dryer unplugged or
Resistance checks must be made with dryer unplugged or
power disconnected.
power disconnected.
n
n
Voltage checks must be made with all connectors attached to
Voltage checks must be made with all connectors attached to
the boards.
the boards.
IMPORTANT:
IMPORTANT:
Avoid using large diameter probes when
Avoid using large diameter probes when
checking harness connectors as the probes may damage the
checking harness connectors as the probes may damage the
connectors upon insertion.
connectors upon insertion.
n
n
Check all harnesses and connections before replacing
Check all harnesses and connections before replacing
components. Look for connectors not fully seated, broken or
components. Look for connectors not fully seated, broken or
loose wires and terminals, pin insertion, or wires not pressed
loose wires and terminals, pin insertion, or wires not pressed
into connectors far enough to engage metal barbs.
into connectors far enough to engage metal barbs.
n
n
A potential cause of a control not functioning is corrosion or
A potential cause of a control not functioning is corrosion or
contamination on connections. Use an ohmmeter to check for
contamination on connections. Use an ohmmeter to check for
continuity across suspected connections.
continuity across suspected connections.
To properly check voltage, complete the following steps:
1.
Unplug appliance or disconnect power.
2.
Attach voltage measurement equipment to proper
connectors.
3.
Plug in appliance or reconnect power and verify voltage.
4.
Unplug appliance or disconnect power after completing
voltage measurement.
Service Diagnostic Mode/
Service Test Cycle
Allows service personnel to run the Service Test Cycle to verify
inputs to the dryer and functionality of the dryer control. You
may want to do a quick and overall checkup of the dryer with this
test before going to specific troubleshooting tests.
Activating Service Diagnostic Mode
IMPORTANT:
Use Service Diagnostic Mode without laundry in
the dryer.
for a summary of the steps in the
Service Test Cycle.
To enter Service Diagnostic Mode:
1.
Open and close the dryer door. The door must be closed to
enter Service Diagnostic Mode.
2.
Be sure the dryer is in standby mode (plugged in with all
indicators off).
3.
Press the following button sequence: [Timed Dry], [Dryness
Level],[Start]; [Timed Dry]. [Dryness Level], [Start]; [Timed
Dry], [Dryness Level], [Start] all within 8 seconds. Once the
sequence is complete, the display will read “Service Mode”.
The display will go blank, and will have a 65 seconds delay
in activity before the automatic service cycle starts. During
this time, the service operator can enter in manual mode
by pressing [Timed Dry] for 5 seconds. Pressing [Timed Dry]
again will step through the automatic tests manually.
4.
During any point in the service cycle, pressing [Start] will
stop the service cycle and display the last stored fault.
Pressing [Start] for 5 seconds, will start the automatic
service cycle again.
S1
During this step, the Display will show “S1” and check the status
of the Master Relays by “clicking” on the relays. This step lasts for
15 seconds before proceeding on to the next step.
S2
During this step, the display will show “S2” and will check the
status of the drain pump. After a short 5 seconds delay, the pump
will turn on for 30 seconds, draining what water is left in the
dryer sump into the water bottle or drain hose.
S5
Checks the motor status while showing “S5” in the display; this
routine starts the motor movement in a clockwise direction and
runs for 20 seconds before proceeding to the next step.
S7
Checks the motor status in the opposite direction of “S5”
while showing “S7” in the display; this routine starts the motor
movement in a counter-clockwise direction and runs for
20 seconds before proceeding to the next step.
S11
During this step, the display will show “S11” and will check the
status of the water level sensor. After a short 5 seconds delay, the
routine will check the measured water level in the sump against
what should be present after the pump out in S2.
Service Cycle Outcome (PASS or FAIL):
On the display, the service cycle will show the results of the
service cycle steps.
END will show on the display once the service cycle is completed.
Last Fault Display
During any part of the service cycle, push button 3 for 5 seconds
to display the last fault. Pressing the button again will display the
next fault stored. To exit this state, push button 3 for 5 seconds,
and the machine will return to the service cycle.
Activation with Saved Fault Codes
If there is a saved fault code, the F number will be shown in the
display. Only one active fault code can be displayed. If no fault
codes are stored, the display shows “S07” and “F00” alternately.
Review the Fault/Error Codes beginning on
for the
recommended procedure.
Unsuccessful Activation
If entry into Service Diagnostic Mode is unsuccessful, refer to the
following indications and actions:
Indication 1:
None of the indicators or display turn on.
Action:
Make sure AC power is available to the dryer.
Indication 2:
Display is on, but unable to enter Service Diagnostic
Mode.
Action:
Press and hold POWER until “3-2-1”and then “YES”
appears in the display. Turn off the dryer display. Wait
10 seconds. Turn on the dryer display. Follow the Activating
Service Diagnostic Mode instructions on page 2-3.
Exit Procedure
To exit the Service Test Cycle, press and hold POWER or open and
close the door.
