代碼 xL2: DC bus high voltage protection (specific sub-code of xH4)
問題描述與安全警告
Trane TVR Pro VRF (220V) 觸發了嚴重的 DC bus high voltage protection (specific sub-code of xH4) 警報。需要由合格的操作員或維修技師立即處理，以防止在製造週期中對設備造成二次損壞或導致零件報廢。在接觸電氣控制箱之前，請務必確保遵循標準安全和停機掛牌 (LOTO) 程序。
官方故障排除步驟
Manual restart required: Yes Display: Retrieved via menu mode n31 after an xH4 inverter module protection Note: 'x' is a placeholder for the compressor system — 1 = compressor system A, 2 = compressor system B (e.g. 1L2 / 2L2). This is a specific error code behind an xH4 inverter module protection. When an xH4 error is displayed, enter menu mode "n31" to read the history error code. xL0/xL1/xL2/xL4 can also be read from the inverter module LED indicators (LED2 continuously on, LED1 flashing). Manually restart after the fault is cleared.
Source: Trane 220V TVR Pro VRF Service Manual — Part 6 Diagnosis and Troubleshooting
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
關於 Trane TVR Pro VRF (220V) 警報
由 Trane 製造的工業控制器具有廣泛的診斷系統，用於保護內部電路和機械連桿。當 TVR Pro VRF (220V) 出現類似 xL2 的錯誤代碼時，通常表示指令值與實際感測器回饋之間存在不匹配。
完整警報清單: 38 Trane TVR Pro VRF (220V) 代碼s.
Have a better solution?
Help the industrial community by sharing your repair experience for code xL2.
Need a searchable reference for more Trane TVR Pro VRF (220V) manuals?
We structure equipment manuals into searchable code, title, cause, solution, safety note, and source-reference data. Send a PDF and example searched codes when you need public pages, private search, or structured exports.
Space reserved for Google AdSense / Industrial Affiliate Links
Monetization target for 2026