Whirlpool WED99HEDC0, Техническое образование

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5-2
n
HybridCare™ Dryer with Heat Pump Technology
DIAGNOSTICS & TROUBLESHOOTING
For Service Technician Use Only
Diagnostic Guide
Before servicing, check the following:
n
Make sure there is power at the wall outlet.
n
Has a household fuse blown or circuit breaker tripped? Was
a regular fuse used? Inform customer that a time-delay
fuse is required.
n
Make sure the dryer fan, lint screen, and secondary lint
filter are clear of lint and obstructions.
n
All tests/checks should be made with a VOM (volt-
ohm-milliammeter) or DVM (digital-voltmeter) having a
sensitivity of 20,000 Ω per volt DC or greater.
n
Resistance checks must be made with dryer unplugged or
power disconnected.
n
IMPORTANT : Avoid using large diameter probes when
checking harness connectors as the probes may damage
the connectors upon insertion.
n
Check all harnesses and connections before replacing
components. Look for connectors not fully seated, broken
or loose wires and terminals, pin insertion, or wires not
pressed into connectors far enough to engage metal barbs.
n
A potential cause of a control not functioning is corrosion
or contamination on connections. Use an ohmmeter to
check for continuity across suspected connections.
Service Diagnostic Mode
These tests allow service personnel to test and verify all inputs
to the machine control electronics. You may want to do a quick
and overall checkup of the dryer with these tests before going
to specific troubleshooting tests.
Activating Service Diagnostic Mode
1. Be sure the dryer is in standby mode (plugged in with all
indicators off).
2. Select any three (3) buttons (except POWER) and follow
the steps below, using the same buttons (remember the
buttons and the order that the buttons were pressed):
Within 8 seconds,
• Press and Release the 1st selected button,
• Press and Release the 2nd selected button,
• Press and Release the 3rd selected button;
• Repeat this 3 button sequence 2 more times.
3. If this test mode has been entered successfully, all
indicators on the console are illuminated for 5 seconds
with “888” showing in the Estimated Time Remaining
three-digit display. If there are no saved fault codes, all
indicators on the console will momentarily turn off, and
then only the seven segment display will come back on
and display “888”.
NOTE: The Service Diagnostic mode will time out after
10 minutes of user inactivity, or shut down if AC power is
removed from the dryer.
3$
*
(
FOR SERVICE TECHNICIAN’S USE ONL
Y
DO NOT REMOVE OR DESTRO
Y
WHIRLPOOL CONTROL PANEL (features and appearances may vary between models)
Rotating the cycle selector knob turns off each
corresponding cycle indicator. (Features and
appearances vary between models).
POWER button: press once to turn off
indicator. Press twice to exit service
diagnostic mode and return to
standby mode.
START/PAUSE button: begin
or continue test. Press once
to turn off indicator.
Option buttons: press each
button once to turn off
its respective indicator.
Figure 1 - User Interface Test
Adjust Drying Time “+” button: press once
to turn off top segment of display.
Press each modifier button
once to turn off its respective
display segment.
Adjust Drying Time “–”
button: press once to turn off
the Eco Monitor and the seven-
segment display.
3$*(
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
DIAGNOSTIC GUIDE
Before servicing, check the following:
„
Make sure there is power at the wall outlet.
„
Has a household fuse blown or circuit breaker
tripped? Was a regular fuse used? Inform
customer that a time-delay fuse is required.
„
Make sure the dryer fan, lint screen, and
secondary lint filter are clear of lint and
obstructions.
„
All tests/checks should be made with a
VOM (volt-ohm-milliammeter) or DVM
(digital-voltmeter) having a sensitivity of
20,000
1
per volt DC or greater.
„
Resistance checks must be made with
dryer unplugged or power disconnected.
„
IMPORTANT: Avoid using large
diameter probes when checking harness
connectors as the probes may damage
the connectors upon insertion.
„
Check all harnesses and connections
before replacing components. Look for
connectors not fully seated, broken or
loose wires and terminals, pin insertion,
or wires not pressed into connectors
far enough to engage metal barbs.
„
A potential cause of a control not
functioning is corrosion or contamination on
connections. Use an ohmmeter to check for
continuity across suspected connections.
SERVICE DIAGNOSTIC MODE
These tests allow service personnel to test
and verify all inputs to the machine control
electronics. You may want to do a quick and
overall checkup of the dryer with these tests
before going to specific troubleshooting tests.
ACTIVATING SERVICE DIAGNOSTIC MODE
1. Be sure the dryer is in standby mode
(plugged in with all indicators off).
2. Select any three (3) buttons (except
POWER) and follow the steps below, using
the same buttons (remember the buttons and
the order that the buttons were pressed):
Within 8 seconds,
• Press and Release the 1st selected button,
• Press and Release the 2nd selected button,
• Press and Release the 3rd selected button;
• Repeat this 3 button sequence 2 more times.
3. If this test mode has been entered
successfully, all indicators on the console are
illuminated for 5 seconds with “ ” showing
in the Estimated Time Remaining three-digit
display. If there are no saved fault codes, all
indicators on the console will momentarily
turn off, and then only the seven segment
display will come back on and display “ ”.
NOTE: The Service Diagnostic mode will time
out after 10 minutes of user inactivity, or shut
down if AC power is removed from the dryer.
Button Press Function Behavior
1st Button - Momentary press
- Press and hold for 5 secs. - Activates User Interface Test
- Exits Service Diagnostics
2nd Button - Momentary press
- Press and hold for 5 secs. - Activates Install Diagnostics
- Software Version Display
3rd Button - Momentary press
- Press and hold for 5 secs. - Displays Next Error Code
- Clears the Error Codes
SERVICE DIAGNOSTIC MENU TABLE
• See “Activating Service Diagnostic Mode” to activate these buttons. Make sure all of step 3 is complete before
activation.
Whirlpool Control Panel
(features and appearances may vary between models)
Figure 1 - User Interface Test