Sensor SUP= Sensor on the side of the supply air device
Sensor EHA= Sensor on the side of the exthaust air device
Possible causes:
- The error message Sensor Error SUP / EHA is a sensor fault / error.
The mid section sensor must be replaced by a competent service technician.
For older units than 2019, it is mandatory to perform a software update with at least version 1.7.1.