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SECTION 5
TROUBLESHOOTING
DOCUMENT: 151315
PV-30208 Photovoltaic Inverter
Operation and Maintenance Manual
Copyright 2003, Xantrex Technology Inc.
5-5
processed.
• Check +/- VDC power supply outputs.
• Check control wire harness integrity (Refer to the system schematic in Section 7).
• Check CT harness for damage.
• Check CT harness +/-15VDC at CT.
• Check CT output voltage (mV) with reference to ground.
• Replace CT showing high output voltage offset.
(9) Current Imbalance Fault (0x10000)
The PV-30208 has determined that there is an excessive phase-to-phase current imbalance, while the
system is operating.
• Observe individual phase currents during operation with the operator interface program and with a
true RMS oscilloscope. Verify waveforms are sinusoidal and maintain proper phase relationships.
• Determine which phase is imbalanced.
• Verify phase conductor wiring integrity (Refer to the system schematic in Section 7).
• Check CT control wire harness integrity (Refer to the system schematic in Section 7).
• Replace CT on the phase exhibiting the current imbalance.
Stop Switch Fault
The on/off switch, located on the upper enclosure, is disabled. The contact block on the back of the
switch must be open for the PV-30208 to report this message.
If the switch is in the on position and the LCD reads ‘Stop Switch’:
• Isolate the PV-30208 from external power (Refer to Section 2).
• Verify continuity across the switch contact block while the switch is turned to the on position.
• Verify continuity between J9-1 and J9-2 while the switch is enabled.