In addition to the text and alarm code on the LCP of the frequency converter, there are 3 status indicator lights. Auto on. Reset. Drives Online Top ten VFD tech support calls - Danfoss
| Step | Action | Notes | |------|--------|-------| | 1 | Reduce ambient temperature | Move drive or add cabinet air conditioning | | 2 | Clear all obstructions | Ensure minimum clearance: 100mm (4 inches) top/bottom | | 3 | Replace cooling fans | VLT fans should be replaced every 3–5 years even if still spinning | | 4 | Reduce load | Check motor FLA vs. drive output current (par. 16-15) | | 5 | Increase switching frequency | Parameter 14-01: try 3–4 kHz if driving long motor cables | | 6 | Reset the error | After cooling, perform a manual reset (via keypad or digital input) | Danfoss Vlt Error Code 2563
Initialization to Default Settings | VLT® HVAC Drive FC 102 In addition to the text and alarm code
For further assistance, you can download specific manuals from the Danfoss Service and Support page. Drives Online Top ten VFD tech support calls
is a protective alarm, not a nuisance trip. It is your drive telling you that its electronic “heart” (the IGBTs) is overheating. Treat it with urgency.