Troubleshooting 143
Flow Chart 0-28 E300 Error Code
E300
MICROPROCESSOR STACK OVERFLOW ERROR
This error code is related to the microprocessor. Usually, this problem will go away when power is cycled.
SAFETY WARNING:
The following troubleshooting procedure may require that tests be made with the electrical
enclosures open and power turned “ON”. These tests should only be conducted by authorized
personnel who are aware of the electrical and mechanical hazards present.
Turn “OFF” the disconnect switch on the main enclosure to
reset the microprocessor, wait five (5) seconds, turn “ON”
the disconnect switch, check for normal operation. If the
problem persists, replace the CPU board.
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