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Fault Codes
Name
Description
Repair Action
1 Lock Monitor
This fault is set if the
motor shaft speed
exceeds 45 RPM for
5-seconds while in spin
mode and unlocked
(determined by mode
shifter feedback).
• Check the lid lock using Service Mode Spin
Test 14.
• Check lid lock harness connectors both at the
main board and at the lid lock assembly.
• Measure the resistance at motor connector
between each motor phase winding and
ground (green/yellow wire).
• Ensure that it is an open circuit.
2 Lid Monitor
Lid is opened and
motor power relay is not
disabled within 500-ms.
• Replace lid lock if this happens frequently.
3 Inverter
Locked Rotor
Critical Fault
Inverter Locked Rotor
121 is set 5 times in one
cycle. (Inverter sets
condition when driving
with no speed feedback
for 3 accumulated
seconds.)
• Physically check the washer for anything
preventing motor movement.
• Measure the resistance of each motor phase
winding. Make sure resistances match the
values on the wiring diagram.
• Verify hall sensor is connected to the main
harness. Put washer in Service Mode and
run Test 14 (Spin). If hall sensor is bad
or disconnected, the basket will start to
spin normally and then stop spinning after
approximately 5-seconds. Ensure hall sensor
is properly connected and positioned on
the motor. If basket spins for approximately
15-seconds, the hall sensor is most likely NOT
the cause.
• For belt and pulley drives, check that the
microfarads of the start capacitor match the
value on the wiring diagram.
• TCO should reset in approximately
45-minutes. If TCO is tripped, make sure
motor moves freely and that nothing is
jamming it. Replace motor if it does not.
• If direct drive, replace inverter board. If belt
and pulley drive, replace main board.
4 Low power
relay stuck off
Low power relay on TL28
IMC direct drive model is
stuck off.
• Replace main board.
