"3072ES / 3772ES / 3772ES HD" Service & Parts Manual October 2008
Page 4-29
POWER WIRING Messages
The following are “power wiring” HELP messages – problems have been detected which are likely
due to power wiring errors:
FAULT: CAPBANK VOLTAGE TOO LOW - CHECK STUD WIRING! -------------- Flash Code: 7/7
• The voltage on the B+ stud of the controller (connected to an internal voltage stabilization capacitor bank) is
too low when the line contactor is off (a pre-charge circuit in the module normally applies approximately
32 volts to the capacitor bank).
• Check the 300 amp fuse, line contactor or power wiring for errors. Also check DC motor for internal
grounding.
OTHER Messages
The following are other HELP messages:
SOME BIG BAD PROBLEM! -------------------------------------------------------------- Flash Code: 9/9
• This message should not occur!
FACTORY OVERRIDE -------------------------------------------------------- Flash Code: (fast flashing)
• When the controller is first shipped, prior to initial calibration, it is configured in a special “factory override”
state. In this state, none of the normal shutdowns or interlocks will occur – the vehicle can be freely lifted/
lowered and driven irrespective of any calibration needs, vehicle tilt, etc.
•As soon as an EZ-Cal is connected to the controller, the factory override state is ended.
• If calibration does not occur, then the factory override state will recur if the EZ-Cal is disconnected and power
is switched off/on.
IMPORTANT: Never use a vehicle in factory override; this state is ONLY
intended for use during manufacture! While factory override
is active, the LED is rapidly flashed on/off.
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