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FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY
WASHER
DISPLAY
EXPLANATION AND RECOMMENDED PROCEDURE
F 20
NO WATER DETECTED ENTERING WASHER
The water fill level is not detected by the pressure
sensor. NOTE: The message "no H20" will appear
before the F20 error is displayed, and the washer may
try three times before the failure code is activated.
Possible Causes
– No water to washer; faucet(s) turned off.
– Defective hot and/or cold valve(s).
– Plugged or kinked inlet hoses or valves.
– Pressure sensor or pressure sensor hose
damaged, kinked, or disconnected.
– Electrical connection from CCU (PS8) to pressure
sensor damaged.
– Drain hose forced down into standpipe > 6" (152 mm).
– Blocked inlet from dispenser to tub.
Procedure
1. Clear error code by opening and closing the main
door or by power cycling the control by removing
power and then reestablishing power to the control.
2. Unplug washer or disconnect power.
3. Check incoming water pressure at faucet.
4. Check inlet hoses for possible leaks.
5. Make sure pressure sensor hose is in good condition
and properly connected to tub and pressure sensor.
6. Verify that water is not running out of the drain hose
(siphoning) as it is filling.
7. Perform continuity test on wire harness connections
from CCU to inlet valves (VCH7 and VSF2), and to
pressure sensor (PS8).
8. Check inlet valves by running a diagnostic test.
9. Check that the pump is not running while the
washer is filling.
10. Verify pressure sensor operation by accessing
Help Mode while running a paid cycle (see Help
Mode Symbols and Elements, page 14).
LONG DRAIN
F 21
The drain time exceeds 8 minutes without reaching
empty level in pressure sensor.
NOTE:
Suds can cause delays in draining, indicated by an
n
alternating display of "SudS" and a countdown timer.
Washer drains for 4 minutes, pauses 5 minutes, then
tries again for 4 additional minutes of draining. F21
will display if washer does not drain. (Normal drain
takes less than 2 minutes).
Possible Causes
– Damaged or blocked pump/pump filter.
– Washer fills during drain.
– Excess suds causing cavitating pump.
– Drain hose blocked, kinked, or exceeds
recommended height.
– Poor connection between CCU (DP2) and drain pump.
Procedure
1. Clear error code.
2. Unplug washer or disconnect power.
3. Make sure the drain hose is not sealed into the standpipe.
4. Ensure the drain height is not more than 8 ft (2.4 m)
above the base of the washer.
5. Check the drain hose and make sure it is not
plugged or kinked.
6. Check the drain pump/pump filter for foreign objects
or worn impeller.
7. Check the electrical connection between the pump
and the CCU (DP2).
8. Check the pump using a diagnostic mode.
9. Check pressure sensor operation in Help Mode and
the condition of the pressure sensor hose.
If all the above are OK and pump is powered but does
not pump water or water flow is poor, replace the pump.
WASHER
DISPLAY
F 22
F 24
PAGE 7
EXPLANATION AND RECOMMENDED PROCEDURE
DOOR LOCK ERROR
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
will attempt to lock the door again. This procedure
can repeat two times before customer loses vend
and 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
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 section, page 15.
Possible Causes
– Water temperature sensor damaged.
– Electrical connections from CCU (SET2)
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 SET2.
If the water temperature sensor is out of range,
replace it.
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