Fujitsu Mini Split Error Code 41: How to Fix It

Q: What causes Fujitsu error code 41?

Error code 41 is caused by a faulty compressor discharge temperature sensor, damaged sensor wiring, poor electrical connections, or occasionally by actual compressor overheating due to refrigerant issues or blocked airflow.

Q: Can I run my Fujitsu mini split with error code 41?

No, you should not continue running the system with error code 41. This error indicates the system cannot monitor compressor temperature, which could lead to compressor damage from overheating if there's an underlying problem.

Q: How much does it cost to fix error code 41?

If it's just a faulty sensor, replacement costs $30-60 for the part plus $100-200 for professional installation. If there are refrigerant leaks or compressor issues, costs can range from $300-1500 depending on the extent of repairs needed.

Q: Where is the discharge temperature sensor located?

The discharge temperature sensor is typically located on or near the compressor discharge line in the outdoor unit, usually mounted with a clamp or bracket to ensure good thermal contact with the refrigerant line.

Q: How long do Fujitsu temperature sensors last?

Temperature sensors typically last 10-15 years under normal conditions. Factors like moisture exposure, extreme temperatures, and electrical surges can shorten their lifespan to 5-8 years.

Abstract

Fujitsu mini split error code 41 indicates a compressor discharge temperature sensor fault, which means the system cannot properly monitor the temperature of refrigerant leaving the compressor. This safety feature prevents potential compressor damage from overheating and requires immediate attention to restore normal operation.