I have a problem with my Brivis heater controller
Brivis Networker Version 1
The Outside Heater controller is a Brivis NG1-lo Heating Module
Auto EMS Series
EMS 20 External

The Error code on the inside Networker is
Error Service 31 HI accompanied with 5 sets of beeps
The error occurs mainly on heater startup….but the heater still functions fine...

Does anyone know what the error code is or how to reset it as this code is not listed on the error code list from the Brivis website.

Any help would be great
Thanks in advance