8514-296-001 REV A page 60
DRIVE OV
VFD Over-
voltage Fault
Condition This error is over-voltage on the VF drive
Delay Delay time is 35 seconds.
Action
Stop the machine and clear the cycle. Keep the door
locked until the machine has stopped moving and then
unlock the door.
Solution
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. One 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,
2 and 3 Hp VFD and 160 for 5 Hp and larger VFD).
Step 4: If you have a 240 VAC, high leg voltage
supply, try disconnecting the high leg. If this cures the
problem, 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.
DRIVE OH
VFD Overheat
Fault
Condition This error is over-heating on the VF drive
Delay Delay time is 12 seconds.
Action
Stop the machine and clear the cycle. Keep the door
locked until the machine has stopped moving and then
unlock the door
Solution
Step 1: Make sure the cooling fins on the VFD heat
sink 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.
DRIVE OL
VFD Overload
Fault
Condition This error is overload on the VF drive
Delay Delay time is 12 seconds.
Action
Stop the machine and clear the cycle. Keep the door
locked until the machine has stopped moving and then
unlock the door
Solution
(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.
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