Maytag 30 Series Service Manual page 85

ACCU
TRAC WASHER
®
INDICATION DISPLAY EXPLANATION AND RECOMMENDED PROCEDURE
DOOR LOCK ERROR
d 1 7
F 22
Washer will make several attempts to lock the door,
then customer will be asked to open door, clear
obstructions, shut door, and reselect cycle. Washer
video note:
will attempt to lock the door again. This procedure
can repeat 2 times before customer loses vend and
This page
washer resets. If entire procedure happens twice
without a successful door lock, F22 will appear.
Possible Causes
– Misaligned or broken door latch.
– Electrical connections from CCU (DLS2, DL3)
to door lock are damaged.
– Misaligned, broken, or overtightened door hook.
Procedure
1. Clear error code.
2. Unplug the washer or disconnect power.
3. Ensure that the latch is secured to the front panel.
4. Check for misaligned, broken, cracked, or loose
door hook.
5. Check the electrical connections between CCU
(DLS2, DL3) and latch.
If the latch fails to lock after checking all of the above,
replace the latch.
TEMPERATURE SENSOR ERROR
d 2 4 F 2 4
Water temperature sensor value is out of range (23°F
to 217°F [-5°C to 103°C])
NOTE: To find correct Ohm reading, refer to the
Water Temperature Sensor sectio
Possible Causes
– Water temperature sensor damaged.
– Electrical connections from CCU (TH2)
to temperature sensor damaged.
Procedure
1. Clear error code.
2. Unplug the washer or disconnect power.
3. Perform Ohm test on Water Temperature Sensor and
harness connection. This reading can be taken from
the cable attached to CCU terminal TH2.
If the water temperature sensor is out of range,
replace it.
video note: To simulate the F22 failure we are
showing the door open and the door switch manually
held closed, which is treated the same by the washer
as if the door were closed and the latch was unable to
lock. The latch will make 6 attempts to lock, then the
display changes and alternates between the words
"oPEn" and "door." It is assumed that the customer will
open the door, clear obstruction, and shut door. Display
will change and flash "RESELECT CYCLE." Washer
will try twice or 12 attempts to lock the door before
cancelling the cycle. Money is held in escrow. The next
time the same washer is started the washer will run the
same routine, if the door locks, the cycle runs normally,
if not, F22 is displayed and money is lost.
ACCU
TRAC
INDICATION DISPLAY
d 1 2
n.
d 4
6-3
WASHER
®
EXPLANATION AND RECOMMENDED PROCEDURE
TACHOMETER ERROR
F 2 5
If the MCU is unable to properly detect motor speed,
the washer shuts down. If a failure occurs during high-
speed spin, the door remains locked for 2 minutes.
Possible Causes
– Damaged or poor contact in electrical connection
from MCU to drive motor.
– Inverted wires on RFI while ground switch(es) open.
Procedure for damaged MCU connection
1. Clear error code.
2. Unplug the washer or disconnect power.
3. Check for broken belt.
4. Verify that the shipping system, including shipping
bolts and spacers, is removed, and that the power
cord is not tangled in any components inside rear
of washer.
5. Verify electrical connection between MCU and drive
motor connector.
6. Reassemble any disassembled parts.
7. Reconnect to power.
8. Check operation of drive motor in diagnostic mode;
if drum tumbles, the MCU and motor are OK.
Procedure for inverted wires on RFI
1. Clear error code.
2. Unplug the washer or disconnect power.
3. Look for reversed polarity at RFI filter.
4. Make sure that the ground switches of the toe panel
or rear panel are closed and working correctly.
5. Check operation of drive motor in diagnostic mode;
if drum tumbles, the motor is OK.
If, after these procedures, the drum fails to tumble,
replace the MCU. If motor operation is not restored,
replace the motor.
DOOR SWITCH ERROR
F 2 6
The door switch circuit is open for 5 seconds while the
door is locked.
Possible Causes
– Electrical connections from CCU (DLS2) to door
switch in latch are damaged.
Procedure
1. Clear error code.
2. Unplug the washer or disconnect power.
3. Verify the electrical connection between CCU and
door switch by using the Help Mod
test at CCU (DLS2) connection.
If the door switch circuit fails to open or close, replace
the door latch.
e or continuity