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04 - Control System
Power Module (E3) Error Codes
Power module error codes will be displayed on the main display. However, the error number is also flashed
on the two-color status LED on the module itself The status LED has 2 colors; red and yellow The red LED
will flash out which digit of the code is coming next, and the yellow LED will flash out the value of that digit.
For example, to flash out an M4 Overload error with a code of 034, the red LED will flash once, followed by
the yellow LED flashing 3 times. Then the red LED will flash twice, followed by the yellow LED flashing 4
times
Code
Description
Comments
2-001
E3 Timeout
The power module is not sending heartbeat messages.
2-011
Precharge Fail
The capacitor bank failed to charge to the KSI voltage. The K2 relay will not
be allowed to close.
2-012
K2 Overload
The current flow from the K2 relay is higher than the permitted set point.
2-013
K2 Contact Weld
The power module has detected that the K2 relay output power is active
after the module has de-energized the relay coil.
• Disconnect the small relay coil wires, and then check the output voltage
with a voltmeter.
2-014
K2 Contact Open
The power module has detected that the K2 relay output power is absent
when the coil is supposed to be energized.
• Check the voltage at the coil wires. If battery voltage is present, then the
relay has likely failed.
2-017
OverVolt Cutoff
The power module has detected and over-voltage condition in the capacitor
bank and has shut down.
2-018
UnderVolt Cutoff
The power module has detected and under-voltage condition and has shut
down all output and the K2 relay.
2-021
M1 Open
The power module has detected an open circuit to the respective motor.
This could be the result of a disconnected wire at the motor or module, or it
could be that the motor’s brushes have worn beyond service.
M1=Right Brush, M2=Left Brush, M3=Side Sweep, M4=Vac1, M5=Vac2
2-022
M2 Open
2-023
M3 Open
2-024
M4 Open
2-025
M5 Open
2-026
M6 Open
The power module has detected an open circuit to the squeegee (M6) or
Deck (M7) lift actuators.
• If no broken connection is located, this could also be caused from the
limit cams inside the actuator to be misadjusted, which could prevent the
actuator from being neither raised nor lowered.
2-027
M7 Open
2-028
M10 Open
The power module has detected an open circuit to the option pump. This
could be the result of a disconnected wire at the motor or module, or it could
be that the motor’s brushes have worn beyond service.
2-031
M1 Overload
The power module has detected the motor is operating above its
established parameters. The most common cause for such an error is when
the motor is experiencing an obstruction, binding, or under excessive load.
2-032
M2 Overload
2-033
M3 Overload
2-034
M4 Overload
2-035
M5 Overload
2-036
M6 Overload
2-037
M7 Overload
2-038
M10 Overload
