Trannergy TRM025KTL, Руководство пользователя

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36 User Manual
Appendix A: FAQ (Frequently asked questions)
Sometimes, the PV system does not work normally; we recommend the following solutions for
average troubleshooting. This can help the technician to understand the problem and take a proper
action.
LCD display Possible actions
Clearable
Fault
Isolation Fault 1. Check whether the inverter is earthed and test impedance
between PV (+) & (-) and the impedance must exceed 3MΩ;
2. Check whether the AC-side has contacts with earth.
Ground Current
Fault 1. The ground current is too high.
2. After cutting off the AC side connection, unplug the inputs
from the PV generator and check the peripheral AC system.
3. After the cause is cleared, re-plug the PV panel and AC
connection, and check PV inverter status.
Grid Fault
Fac Over Range
Vac Over Range 1. Wait for 5 minutes, if the grid returns to normal, PV inverter
automatically restarts.
2. Make sure grid voltage and frequency meet the local
specifications.
Utility Loss 1. Grid is not connected.
2. Check grid connection cables.
3. Check grid usability.
4. If grid is ok and the problem exists still, maybe the fuse in the
inverter is open, please call service.
Over
Temperature 1. The internal temperature of inverter is higher than specified
normal value.
2. Find a way to reduce the ambient temperature.
3. Or move the inverter to a cooler environment.
PV over Voltage 1. Check the open PV DC voltage, and see if it is greater than or
too close to 900VDC
2. If PV DC voltage is less than 900VDC, and the problem still
occurs, please call local service.
Permanent
Fault
Consistent Fault Disconnect PV (+) or PV(-) from the input, restart the inverter.
Relay-Check
Fail 1. Disconnect all PV (+) or PV (-).
2. Wait for a few seconds.
3. After the LCD switches off, reconnect and check again.
4. If the problem remains, please call local service.
DC INJ High
EEPROM R/W
Fail
SCI Failure
AC HCT Fault
GFCI Failure