Ariston

 

Microgenus MFFI 47-116-37, 37-116-38, 47-116-39, 47-116-47.

Problem Solution
Fault code E34 Air Pressure Switch Problems, check for a restrictor in the exhaust outlet, these are only reqd. for short flues and can hinder the air pressure switch operation. This should only be done after all other checks are ok.