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: Check 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 ltering) at the voltage
supply panel, connect a line choke on the high leg or install a
VFD lter.
33
Part # 8533-053-001 REV 4/09
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 ns 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” deection 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, in-
jection 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.
F22
Future use No action required
F23
VFD has been replaced,
disconnected, or removed.
Soft reset control.
F24
Injection relay PCB has been
removed or loose connection.
Soft reset control.
F25
Optional water valve PCB
removed or water valve has
been replaced .
Soft reset control.
F26
VFD unit has been added or
loose connection.
Soft reset control.
34
Part # 8533-053-001 REV 4/09
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