ACiQ Air Handler Error Code EC 56

Evaporator Coil Outlet Temperature Sensor "T2B" Reads Outside of Parameters or Sensor Short Circuit

The evaporator coil's outlet temperature sensor "T2B" is under or over its recommended operating temperature.

Error at Start Up or During Normal Operation

  • Check the coil outlet temperature with a standalone thermometer. Record the temperature and reach out to the manufacturer for additional troubleshooting or part replacement.