The condenser sensor has failed. In older firmware (U01-r02), this stops the compressor; in newer versions (U01-n01), the display alternates between PF2 and the cabinet temperature while the compressor continues to cycle.
By following this comprehensive guide, you will be well-equipped to understand and address ELSTAT EMS 55 advanced error codes, ensuring optimal system performance and reliability. elstat ems 55 advanced error codes
For further assistance, you can download the EMS-55 Advanced Controller Manual from Combustion Controls or view specific troubleshooting guides on ManualsLib . ems-55-controller.pdf The condenser sensor has failed
: Stand-by Mode . This appears during non-operational hours when the unit is in energy-saving mode. this stops the compressor