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 fi 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” defl ection 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 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.
8
Part # 8533-074-001 09/13
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