SECTION 5
TROUBLESHOOTING
DOCUMENT: 150919
PV-15208 Photovoltaic Inverter
Operation and Maintenance Manual
Copyright 2000, Xantrex Technologies Inc./Trace Technologies Corp.
5-3
(2) IPM Over Temp Fault (0x0001)
The IPM module has exceeded its maximum allowable temperature.
Possible causes:
•
Clogged inlet filter.
•
External cooling fan inoperable.
•
Airflow on heat sink impeded due to accumulation of debris.
•
Operation above rated ambient temperature for an extended period of time.
•
Auxiliary contact block on contactor K1 inoperable. This is only possible if the fan does not operate
when the contactor closes. Carefully check voltage at the K1-N.O. aux. contact to the ground bus
when the contactor is closed. (See schematic in Section 7)
(3) Ground Current Fault (0x0080)
The earth safety ground current has exceeded the maximum-programmed value.
Possible causes:
•
The negative wire from the PV array has been passed through CT1. Remove wire and connect to
TB1-2. Run wire from TB1-2, through CT1, and land at one of the chassis ground studs.
•
Inspect the PV array for actual ground faults.
•
The PV array has been grounded in more than one location. If the PV array is grounded through
CT1, it must not be grounded at any other location.
•
CT1 defective: Contact your Xantrex/Trace Technologies distributor for assistance or service.
(4) SW PV/DC Over Voltage Fault
(0x0040)
The PV voltage has exceeded the maximum programmed limit. This limit is set to 600 VDC during
system test.
Check the PV input voltage at the PV disconnect switch. If the voltage is below 600 VDC, restart the
PV-15208.
Possible causes:
•
The PV array open circuit voltage exceeded 600 VDC.
•
There is a problem with the PV voltage sense wiring (see system schematic in Section 7).
(5) AC Line Under Frequency Fault (0x0400)
The AC utility frequency fell below the minimum programmed limit. This limit is set to 59.5 Hz and the
system response time limit is set to 3 cycles to insure the PV-15208 disconnects from the utility within
the time limit allowed by UL1741.
Possible causes:
•
The utility frequency fell below the allowable limit (59.5 Hz by default). Verify the utility frequency
is stable and within allowable operating limits.
•
There is a problem with one or more of the AC sense wires (see system schematic in Section 7).
This fault is auto-resetting. The unit will automatically restart after line has stabilized within normal
limits for 5 minutes.