My Vokera Mynute VHE was installed in December 2009. Every year during the winter months it has developed a fault flashing no. 74 and shuts down. It is easily restarted. This fault is occurring with increasing frequency 4 times in the last 4 weeks. Last year a Vokera engineer installed a new chipboard, but this has not solved the problem. I would welcome any solutions.
many thanks
disappointed customer, December 2013