No heating or hot water for 4 weeks! Two engineers haven't been able to fix it. Yesterday div valve and control panel changed, hot water and heating for 24 hours and now problem has reoccured - boiler fires up and trips all sockets throughout house. Last engineer thinks it could be an electrical fault rather than appliance fault but we think he may be wrong. Very cold mummy and 2 year old getting desperate and don't know what to do. Can anybody advise please?