Dexter Laundry WCAD-Series Installation And Parts & Service Manual page 23

Fault# Description Customer Action
F13 The variable frequency Check the data communication cable between the
drive (VFD) and the washer computer and the variable frequency drive
washer computer are not (VFD).
communicating.
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 Step 1: Check to make sure the washer cylinder turns
motor. 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 Step 1: Measure the supply voltage to the VFD on
drive (VFD) senses that the L1, L2 (or N), and L3 (if connected to three phrase
the internal voltage is too power). the supply voltage should be from 187 to
high. The source of the 264 VAC or 108 to 132 VAC for a 120 VAC VFD. Also
problem can originate from make sure the supply wires on L1, L2 (or N) and
two different areas. Area L3 (if connected to three phase power are securely
1: The input voltage can be connected.
Step 2: Ch eck the braking resistor connections at the
too high, or there may be a
high level of electrical noise. VFD. The terminal screws should be tight. Once of the
Area 2: The motor can be braking resistor wires should be connected to terminal
generating a voltage that is B2.
acting like an input to the Step 3: Measure each braking resistor separately to
VFD output motor terminals. 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.
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Fault# Description Customer Action
F16 The temperature sensor Step 1: Make sure the cooling fins on the VFD heatsink
inside of the variable and the ventilation louvers on the VFD cooling fan cover
frequency drive detects that are clean. Step 2: Start a washer cycle and make sure
the internal temperature is the VFD cooling fan operates after the cylinder starts
too high. turning.
F17 Overload of the drive or (Check drive fault code before powering down). Check
motor 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 The CE errors are communications errors. Data Cable
communications between noise can cause the majority of these errors.Check VFD
the controller and drive fault code before turning off power. Check the data
Internal drive error # 32. cable between the controller and the drive. Replace
This error also has CEXX data cable if it appears damaged and fault appears
errors associated with it that again. Please note that this fault will occur if you turned
are presented on the drive main power off and on to quickly. (See Note below)
display.
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 Retighten the screw down connections on the lower
Only 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, Soft reset control.
disconnected, or removed.
F24 Injection relay PCB has Soft reset control.
been removed or loose
connection.
F25 Optional water valve PCB Soft reset control.
removed or water valve has
been replaced .
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