Troubleshooting guide

PAGE 19
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
The dryer will beep and “CF” is displayed for
1 second followed by the current dryness
setting on the 7-segment display. The factory
default value is “1”.
2. Pressing the dryness level button cycles
the dryness setting between 1, 2, and 3 in that
order, starting at the current setting. The new
setting is displayed in the 7-segment display.
3. With the display flashing the desired dryness
setting, press the START button to save the
drying mode and exit to standby mode (the
START button in this mode does not start a drying
cycle). The result will be stored in EEPROM of the
CCU and will be retained after a power loss.
NOTE: If there is no user activity for 20 seconds,
or a button other than START or DRYNESS
LEVEL is pressed, the dryness setting is
reverted back to its previous setting.
4. Press the POWER button at any time
to cancel changes and exit from this mode.
TEST #6: Buttons and Indicators
This test is performed when any of the following
situations occurs during the “Console Buttons
and Indicators Test” (see page 4).
3None of the indicators or display turn on
3Some buttons do not light
3No beep sound is heard
None of the indicators or display turn on:
1. Unplug dryer or disconnect power.
2. Remove top panel to access the CCU and
user interface (UI).
3. Visually check that ALL CCU connectors
are inserted all the way into the CCU.
4. Visually check that ALL UI connectors
are inserted all the way into the UI.
5. Visually check that the UI and housing
assembly is properly inserted into the front
console.
6. If all visual checks pass, perform TEST
#1: CCU Power Check, page 9, to verify
supply voltages.
If supply voltages are present, replace
the user interface and housing assembly.
If supply voltages are not present, replace
the CCU.
7. Reassemble all parts and panels.
8. Plug in dryer or reconnect power.
9. Perform the “Console Buttons and
Indicators Test” (see page 4) to verify repair.
Some buttons do not light:
1. Unplug dryer or disconnect power.
2. Remove top panel to access the CCU and
user interface (UI).
3. Visually check that the UI and housing
assembly is properly inserted into the front
console.
4. If visual check passes, replace the UI
and housing assembly.
5. Reassemble all parts and panels.
6. Plug in dryer or reconnect power.
7. Perform the “Console Buttons and
Indicators Test” (see page 4) to verify repair.
No beep sound is heard:
1. Verify that the “Cycle Signal” volume is
turned on. Press the CYCLE SIGNAL button
to adjust the volume level.
2. Unplug dryer or disconnect power.
3. Remove top panel to access the CCU
and user interface (UI).
4. Visually check that ALL CCU connectors
are inserted all the way into the CCU.
5. Visually check that ALL UI connectors
are inserted all the way into the UI.
6. If all visual checks pass, replace the
UI and housing assembly.
7. Reassemble all parts and panels.
8. Plug in dryer or reconnect power.
9. Perform the “Console Buttons and
Indicators Test” (see page 4) to verify repair.
TEST #7: Door Switch
Activate the Service Diagnostic Mode and then
select the User Interface/Control System Test.
See procedures on page 4. Perform the steps
under “Diagnostic: Door Switch/Drum LED.”
Functionality is verified when opening the door
causes “p6e” (electric) or “p69” (gas) to be
displayed and turns on the drum light. Closing
the door should turn off the drum light.
If the preceding conditions are not met:
1. Unplug dryer or disconnect power.
2. Remove top panel to access the machine
electronics.
3. Check that the wires between the door
switch and CCU are connected. (Refer to
wiring diagrams on pages 24 and 25.)
If the connections are good, replace the
wire and door switch assembly and retest.