If it’s an Ariston, (it’s very important to state what make and model your boiler is when inquiring)
code 108 is low system pressure, if you release air from the system via a radiator pressure will drop and the boiler will not operate. Ensure there are no visible leaks, but being as it’s showing this code every morning and after daily repressurisation we can only assume you have a leak somewhere and as it’s a new install calling the installer back is the only way to go..
Phill Dee, March 2018
