Code xP3: Compressor current protection
Issue Description & Safety Warning
The Trane TVR Pro VRF (220V) has triggered a critical Compressor current protection alarm. Immediate attention from a qualified operator or maintenance technician is required to prevent secondary damage to the equipment or spoiled parts during the manufacturing cycle. Always ensure standard safety and LOTO procedures are followed before accessing electrical cabinets.
Official Troubleshooting Steps
Manual restart required: No Display: Displayed on the unit with the error Note: 'x' is a placeholder for the compressor system — 1 = compressor system A, 2 = compressor system B (e.g. 1P3 / 2P3). Description: 1P3 indicates current protection on compressor A; 2P3 indicates current protection on compressor B. All units stop running. Error code is only displayed on the unit with the error. Trigger condition: Current of compressor AA55PHDG-A1Y2 ≥ 41A or DC65PHDG-A1Y2 ≥ 49A. Recover condition: Current of compressor AA55PHDG-A1Y2 < 41A or DC65PHDG-A1Y2 < 49A. Reset method: Resume automatically. Possible causes: - Outdoor unit stop valves are closed. - Indoor load too large. - Power supply abnormal. - Sudden interruption of power to IDUs. - Excess refrigerant. - System contains air or nitrogen. - Poor condenser heat exchange. - High pressure side blockage. - Inverter module damaged. - Compressor damaged. - Main PCB damaged.
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.
About Trane TVR Pro VRF (220V) Alarms
Trane controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code xP3 on the TVR Pro VRF (220V) identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Trane's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 38 Trane TVR Pro VRF (220V) codes.
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