Danfoss

От Erik Zaikin
3 мин чтения

Assistance and Repair - Troubleshooting Guide

This guide is designed to enable a quick diagnosis of TLX inverter issues, providing solutions when possible. Navigate to the Log menu and then to Event Log to view the last recorded event along with a list of the last 20 events. When the inverter switches to Connected to Grid mode, the last recorded event resets to "0."

  • Event Code Structure: Consists of two parts - Group Classifier and Event ID. The Group Classifier indicates the general type of event, while the Event ID specifies the exact issue.
  • The Status menu displays sensor values and other readings to assist in diagnosing problems.

How to Read the Event Tables

  • Event Type: Specifies if the event is related to the grid, PV system, internal issues, or self-protection.
  • ID: Unique identifier for each event.
  • Description: Brief description of the event.
  • Action: Suggested action before seeking further assistance.
  • DNO: Contact the Distribution Network Operator if the suggested action does not resolve the issue.
  • Hotline: Contact the inverter manufacturer’s hotline for further assistance.
  • PV: Contact the PV system provider if further support is needed.

Network-Related Events

ID Range Description Action DNO Hotline PV
1, 2, 3, 4, 5, 6 Network voltage too low Check voltage and AC installation. If voltage is zero, check fuses. x - -
7, 8, 9 Average network voltage too high Verify installation. If correct, increase average voltage limit as per Safety Functional section. x - -
10, 11, 12, 13, 14, 15 Network voltage too high Check voltage and AC installation. x - -
16,17,18 Momentary network voltage too high Check voltage and AC installation. x - -
19, 20, 21, 22, 23, 24 Network frequency out of range - x - -
25, 26, 27 Phase-to-phase voltage too low Check phase-to-phase voltage and AC installation. x - -
28 ,29, 30 Network loss, ROCOF out of range - x - -
31, 32, 33 Excessive DC component in network current - - x -
34, 35, 36, 37 Excessive residual current Inspect all PV cables and modules. - x -
40 AC network unavailable for more than 10 minutes Check AC installation. x - -
246 Network event detected; inverter stopped by redundant safety circuit Check event log. If type 246 is common, contact maintenance; otherwise, wait 24 hours and check again. - x -

PV System-Related Events

ID Description Action DNO Hotline PV
115 Low insulation resistance between PV and ground Inspect all PV cables and modules, and verify proper grounding per installation manual. - x x

Internal Inverter Events

ID Range Description Action DNO Hotline PV
201, 202, 203, 204, 205, 206, 207, 208 Internal inverter temperature too high Ensure airflow to heat sink is not obstructed. - x -
209, 210 High internal inverter intermediate voltage Check max PV voltage via display and verify it is within limits. - x -
211 No tachometer signal from fan Check event log. If type 211 is common, contact hotline. - x -
212 Unbalanced internal inverter intermediate voltage Check bus DC current and contact hotline. - x -
216,217,218 Excessive network current - - x -
223 Anti-islanding protection triggered Grid control is available. - x -
224 RCMU conductor interrupted - - x -
225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240 Internal memory error - - x -
241, 242, 249 Internal communication error - - x -
243, 244 Internal error - - x -
247 Safety processor acceptance test failed - - x -
251 Functional safety processor indicates self-protection - - x -
213, 214, 215 Acceptance error in internal measurements - - x -
222 Autotest completed (Italy only) No action required. - - -

Self-Test (Fault-Tolerant) Events

ID Range Description Action DNO Hotline PV
350,351, 352 RCMU self-test failed - - x -
353,254, 355 Current sensor test failed Verify PV array polarity is correct. - x -
356, 357, 358, 359, 360, 361, 362, 363 Transistor and relay test failed - - x -
364 Possible AC installation error Verify AC installation per manual, ensure neutral is connected. - x -