Your control box displays the "err PC" code.
The code "err PC" corresponds to an outside temperature that is too low, so the heat pump puts itself in the security lock.
If you encounter this code during normal outside temperatures (+5°C), it is possible that the position of the outside temperature sensor prevents proper measurement. Therefore, simply remove this sensor from the evaporator to prevent this error code appears too repetitively.
In case your product is out of warranty (more than 2 years or more than 3 years for the Jetline Premium only), fill out the form (available here).
If your product is still under warranty (less than 2 years or less than 3 years for the Jetline Premium only), fill out the form (available here), with your purchase invoice and a photo of the problem attached.