Troubleshooting Machine Fault Errors
Displayed on front of washer
The following pages are a description of fault codes that will appear on the front of the washer. There is
a chart format that shows what fault code that will be displayed at washer front. These codes displayed
may stop machine operation or may not stop machine Please check chart before removing power to
reset. PLEASE NOTE: CHECK DRIVE FAULT CODE BEFORE POWERING MACHINE DOWN!
Fault# Description Customer Action
F1
The door failed to close and
lock or The door failed to remain
locked during the cycle.
Check VFD fault code before turning off. Check to hear if
door solonoid engaged. Turn off the power to the washer.
Check wire connections to door /lock switches. Check
wire connections from switches to controller. Check P-4
wire connections at PCB controller. Adjust the door lock
mechanism. (See service manual)
F2
The washer tub does not ll
with water within 7 minutes. The
wash cycle will continue. The F
2 will ash three times, then wait
for 30 seconds. The error will
clear at the end of the cycle.
Turn off the power to the washer. Check the operation of the
water valves. Check the incoming water pressure. Check for
blocked or restricted water ow. Check to ensure the drain
valve is functioning properly. This error will occur on 18#
washers when water level is set for high (the pressure switch
in 18# washer is only one level).
F3
Memory error in controller. The
memory checksum is wrong.
Check VFD fault code before turning off power. Try to clear the
fault with the Palm. Try a soft Reset of the controller with the
white button. If problem. Replace PCB controller.
F4
Washer controller
communication error
Check VFD fault code before turning off power. Try the data
cable rst. Move around cable and remove any side loading
tension from data cable connector ends. Check connection
P25/24/23 to P15. Turn power back on to the washer. If the
problem returns, replace the PCB washer controller.
F5
Pressure Switch error (only
OPL) - when the high level
sensor indicates full but the
lower one indicates empty. The
wash cycle will continue. The
F 5 will ash three times, then
wait for 30 seconds. The error
will clear at the end of the cycle.
Check VFD fault code before turning off power. Check the
pressure switch.(Ohm out contacts). Check pressure switch
connections to ensure they are all making good contact.
Check the Molex type harness connector to ensure no wire
been pushed out of the Molex type housing that it is shorting
or not connecting.
F6
Wrong washer size for drive
type.
Check VFD fault code before turning off power. If the controller
was installed in a different size machine before being installed
in this machine, a problem can occur. If someone has been
doing repairs on the washer, check for the correct size drive.
It can also be caused by pressure switch harness. Check
to ensure the correct harness in installed. The control can
be reset by holding program button on controller during
startup (soft reset). Check orange wire at Molex connector on
controller coming from pressure switch or replace pressure
switch harness.
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Part # 8533-053-001 REV 4/09
Fault# Description Customer Action
F7
Wrong size drive installed Check VFD fault code before turning off power.Check to
ensure all the harnesses are properly connected to the
controller. Check to ensure the VFD drive horsepower is
proper for this size of washer. The control can be reset by
holding program button on controller during startup (soft reset)
Check orange wires at molex connector on controller coming
from pressure switch.
F8
The washer tub does not empty
within 7 minutes. The wash
cycle will continue. The F 8 will
ash three times, then wait for
30 seconds. The error will clear
at the end of the cycle.
Check VFD fault code before turning off power. Check to
ensure the drain valve is operating properly (slow drain has
potential to cause this code). Check to ensure the pressure
switch tube is clear of any blockage, and the pressure switch
is operating properly. Check the pressure switch harness.
F9
The washer tub does not reach
the spin target frequency within
150 seconds. The wash cycle
will continue. The F9 will ash
three times, then wait for 30
seconds. The error will clear at
the end of the cycle.
Check VFD fault code before turning off power. Check to
ensure the drain valve is operating properly (slow drain has
potential to cause this code). Check to ensure the pressure
switch tube is clear of any blockage, and the pressure switch
is operating properly. Check the pressure switch harness.
F10
After a spin the washer tub does
not stop within 150 seconds.
Check VFD fault code before turning off power. Inspect
the braking resistors and measure the resistance. Check
connecting wiring from braking resistor to the drive mounted in
the top of the washer. Reset the drive and try again. Possibly
incorrectly programmed drive.
F11
The drive size setting has
changed.
Check VFD fault code before turning off power. Check to
ensure all the harnesses are properly connected to the
controller. Check to ensure the drive horsepower is proper
for this size of washer. If no one has worked on machine very
recently then PCB controller or VFD may need to be replaced.
Do a soft reset before and after either VFD replaced.
F12
Washer controller internal error Check VFD fault code before turning off power. Turn off the
power to the washer. Wait one to two minute. Turn on the
power to the washer. If problem reappears, contact your
Dexter Authorized Representative.
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Part # 8533-053-001 REV 4/09
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