Fault# Description
Customer Action
F13
The variable frequency
drive (VFD) and the
washer computer are not
communicating.
Check the data communication cable between the
washer computer and the variable frequency drive
(VFD).
Step 1:
Make sure the cable did not become
unplugged during operation.
Step 2:
Make sure that the cable is not being pulled
sideways at either the washer controller, or the VFD,
plug end. If both ends of the communications cable are
plugged in the washer computer and VFD and there is
no tension on the communications cable pulling it from
side to side, then replace the cable.\
Step 3:
Inspect both female connection points at PCB
controller and at VFD. These may need replacement if
they cannot be reset.
F14
Over-current on the drive or
motor.
Step 1:
Check to make sure the washer cylinder turns
freely by hand. If it turns freely, continue to step 2. If
it does not, remove the belt and see if the motor turns
freely by hand. If the motor turns freely, then check for
obstructions in the cylinder or check the bearings. If
the motor does not turn freely, replace the motor.
Step 2:
Check the motor wires for a short circuit
between leads. If there are motor leads that have
conductors touching, separate them and insulate them.
If the wires are broken, splice them together or replace
the motor.
Step 3:
Check braking resistors to see if they measure
the correct resistance. If a resistor does not measure
the proper value, replace it.
F15
The variable frequency
drive (VFD) senses that
the internal voltage is too
high. The source of the
problem can originate from
two different areas. Area
1: The input voltage can be
too high, or there may be a
high level of electrical noise.
Area 2: The motor can be
generating a voltage that is
acting like an input to the
VFD output motor terminals.
Step 1:
Measure the supply voltage to the VFD on
the L1, L2 (or N), and L3 (if connected to three phrase
power). the supply voltage should be from 187 to
264 VAC or 108 to 132 VAC for a 120 VAC VFD. Also
make sure the supply wires on L1, L2 (or N) and
L3 (if connected to three phase power are securely
connected.
Step 2:
Ch eck the braking resistor connections at the
VFD. The terminal screws should be tight. Once of the
braking resistor wires should be connected to terminal
B2.
Step 3:
Measure each braking resistor separately to
make sure they are the correct resistance. (200 for 1
and 2 Hp VFD and 160 for 3 Hp VFD).
Step 4:
If you have a 240 VAC, high leg voltage
supply, try disconnecting the high leg. If this cures
the problem, either leave the high leg disconnected,
connect a transient voltage surge suppressor (with
some form of filtering) at the voltage supply panel,
connect a line choke on the high leg or install a VFD
filter.
Fault# Description
Customer Action
F16
The temperature sensor
inside of the variable
frequency drive detects that
the internal temperature is
too high.
Step 1:
Make sure the cooling fins on the VFD heatsink
and the ventilation louvers on the VFD cooling fan cover
are clean.
Step 2:
Start a washer cycle and make sure
the VFD cooling fan operates after the cylinder starts
turning.
F17
Overload of the drive or
motor
(Check drive fault code before powering down). Check
the washer motor to ensure it turns freely. Check
the wiring for loose connections to the drive and
motor. Measure the braking resistor values. Check for
damaged motor wires. Check V-Belt tension and adjust
to 1” deflection at center. Check braking resistors.
F18
Ground Fault to the drive
Check VFD fault code before turning off power. Check
the wiring connections to the drive and motor. Check
the ground wiring of the drive, motor and incoming
connection to ensure a proper ground is present. Check
for damaged motor wires.
F19
Low Voltage to the drive
Check VFD fault code before turning off power.
Turn the power off to the washer. Check the wiring
connections to the drive and motor. If no problem is
observed, turn on power to the washer and test. (See
Note) Measure the incoming line voltage.
F20
Internal drive error
Check VFD fault code before turning off power. Turn
the power off to the washer. Wait one minute. Turn the
power on to the washer. If problem reappears, contact
your Dexter representative.
F21
Data error on
communications between
the controller and drive
Internal drive error # 32.
This error also has CEXX
errors associated with it that
are presented on the drive
display.
The CE errors are communications errors. Data Cable
noise can cause the majority of these errors.Check VFD
fault code before turning off power. Check the data
cable between the controller and the drive. Replace
data cable if it appears damaged and fault appears
again. Please note that this fault will occur if you turned
main power off and on to quickly. (See Note below)
Warning codes F22 - F28: These codes indicate that a component (VFD,
relay PCB, injection relay PCB, water valve) has been replaced, added, or
removed and you will need to soft reset the PCB controller board to reset
the main controller to operate properly.
Fault# Description
Customer Action
F22
MS300 Drive Conversion
Only
Retighten the screw down connections on the lower
terminal bar of the VFD for DC1, B1, and B2. Check the
wire connections on B1 and B2 for Breaking Resistors.
F23
VFD has been replaced,
disconnected, or removed.
Soft reset control.
F24
Injection relay PCB has
been removed or loose
connection.
Soft reset control.
44
45
Part # 8533-073-001 3/22
Part # 8533-073-001 3/22
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