Display Diagnostics; Microprocessor Board Fault Codes; To Remove Microprocessor Board; To Remove Touch Pad - Maytag LAT2300 Service Manual

water valves on during the Warm temp,
50% more hot water for Energy Hot and
50% more cold water if Energy Warm.
To implement the lid switch test for
welding, the lid must be opened
between programs. If this does not
occur, "lid" will appear in the display
when the next program is selected.
This must be cleared by lifting the lid
before a program can be selected. If
opening the lid does not clear the "lid"
from the display the assumption is that
the lid switch is welded. The test does
not occur if the cycle is ended by the
pressing of the OFF-KEY, only if the
cycle ends naturally.
Microprocessor Board Fault Codes
• F1 in display indicates Board Failure
(lid circuit). Inoperable. Replace
microprocessor board.
• F2 in display indicates Water valve
thermistor sense failure (too low).
Operative.
• F2 in display indicates Water valve
thermistor sense failure (too high).
Operative.
• F4 in display indicates Board Failure
(level circuit). Inoperable. Replace
microprocessor board.
• F9 in display indicates low voltage.
Operative.
Fault codes F1 & F4 will be displayed
when the failures occur, while F2, F3,
and F9, if present, can only be viewed
after a key sequence of OFF and while
holding OFF actuate SLOW SPIN for 2
seconds. After the entire display turns
on then off, the code will be displayed.
To re-test the water valve failure, water
must be run in the machine. If F2 or F3
occur, the machine will default to both
DISPLAY DIAGNOSTIC:
The display can be viewed with all seg-
ments on for 4 seconds after a key
sequence of OFF and while holding OFF
actuate Pause for 2 seconds to activate.
To Remove Microprocessor Board:
1. Disconnect washer from power
supply.
2. Remove the two inside screws on
the control panel.
3. Tilt control panel out and remove
the three edgeboard connectors
from the microprocessor board.
4. Remove the eight nuts that secure
the microprocessor board to the
touch pad.
To remove touch pad:
1. Follow procedure to remove micro-
processor board.
2. Remove the four nuts that secure the
touch pad to the control panel.
16001145 SECTION 3. WASHER - SERVICE PROCEDURES
3-3
©1994 Maytag Corporation