Brivis gas central heating error message

Frank requested 3 quotes from Heating Professionals in Northbridge

i have brivis ems20 central heating.
i am getting error message 30.
does anyone know what it means and how to fix it?

Our central heating system from brivis is not turning on
check central heating , unit outside house, from brivis, does not turn on and...

Rinnai Convector 516TR needs a service and clean
The heater works fine but needs a thorough 'grease and oil change' as it...

Rinnai Gas Heater 516TR is not igniting and needs repairs
Rinnai Gas Heater 516TR is not igniting and needs repairs

Gas central heater has stopped working doesn't know the problem old heater
gas central heater has stopped working doesn't know the problem old heater