Mitsubishi Air Conditioner Error Codes
| Code Text | Description | Cause | Check Procedure | Technical Support Notes |
|---|---|---|---|---|
| 1301 | Low Pressure Fault.Low Pressure sensor (63LS) reads below 1 Bar in the system. | Possible refrigerant leak. Restriction or blockage in refrigerant circuit causing low side pressure to drop. Problem with pressure sensor reading incorrectly. | Check the system standing pressure for a complete gas loss.Use the Testing dip switches in the app and compare system gauge pressure to Low Pressure Sensor reading – If the pressure sensor is faulty it will read 0.0 bar even though there is pressure in the system. | Using the testing dip switches check the system running pressures/temperatures to determine if the system is short of gas or if there is a restriction/blockage in the circuit.For refrigerant circuit diagram click the link below and type unit model number into the document library search box |
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