Troubleshooting code
Back to all 5TWX7048A1 error codes
Software error or high MOC PFC temperature protection. Use this page to document the issue and prepare for service. GreenFlow should handle diagnosis for electrical, refrigerant, lockout, or recurring conditions.
What the code means
Trane ODR-SVN003D-EN multi-speed status/fault tables for 5TWX7 heat pumps with ComfortSeek identifies A1000AA display value E as software error or high MOC PFC temperature protection.
Call GreenFlow if the code repeats, the system is locked out, heating or cooling is not restored, there is ice buildup, electrical odor, unusual noise, or any issue involving pressure switches, sensors, wiring, refrigerant, reversing-valve operation, or warranty coverage.
Share the visible code, model and serial number if available, photos, current symptoms, and whether the issue affects heating, cooling, or both.
Trane ODR-SVN003D-EN multi-speed status/fault tables for 5TWX7 heat pumps with ComfortSeek identifies A1000AA display value E as software error or high MOC PFC temperature protection.
The Trane source used for this page associates A1000AA E with "Software error or high MOC PFC temperature protection". Match the visible display text, LED pattern, or alert wording to the exact code whenever possible.
This code is grouped under outdoor drive control in the source-backed Trane troubleshooting data.
Source-backed Trane ODR-SVN003D-EN multi-speed status/fault tables for 5TWX7 heat pumps with WeatherGuard and ComfortSeek. Local products are matched by documented 5TWX7 base model family.
The Trane source row points to outdoor drive control. Record the exact code and visible alert text before any reset so the control history is not lost.
Capture the exact code, any displayed alert text, the model and serial number, thermostat or control status, operating mode, symptoms, and photos of the display or LED pattern before the alert history is cleared.
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