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1.1.1RS-232 Serial Communications

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Modem/Host Computer/Terminal

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Battery failed test

Battery SCR fault (shoe or open)

Bypass shutdown due to overload (UPS shutdown)

Charger shutdown due to over temperature

Control power supply failure

DC bus under voltage

Excessive retransfer attempts

Inverter shutdown due to overcurrent

Inverter shutdown due to overload

Inverter shutdown due to overtemperature

Inverter shutdown due to under/over voltage

Low battery

On battery

PFC fault (hardware fault)

PFC shutdown due to over temperature

PFC voltage high

PFC voltage low

RAM test failed

ROM test failed

Time-out fault (self test at start-up)

UPS fault

User initiated UPS shutdown

Introduction 3