I note another member has intermittent problems, I have nothing at all. No 12 volt lights, fridge, water pump, water tank capacity, battery condition etc. It's a CI Carioca 2005 644. Have checked fuses on the electrics control unit, unplugged and reconnected all connections on the circuit board similarly for the control panel mounted over the habitation door. The multimeter shows 12.7 volts coming from the engine and leisure batteries; not tried it with the engine running. Tried running from mains but same problem though the leisure battery was being charged 13.7 volts and the 240 volt sockets are live. Is it the circuit board and components? Can these be repaired as a new one costs £300 I am told by the CI agent and may take 6 weeks to travel from Italy!