Unfortunately, keeping the cover open did not solve the problem. It still goes to standby for almost a minute before the flame goes on and the cycle is repeated (on then stops with standby then on then standby and so on...)
Could the temperature sensors be the problem ?? what else could it be ?
We get intermittent hot water. It runs for about 1 minute hot, then the heater flame stops and we get cold water for few seconds, then hot water with the ignition going on and the flame too, then cold ...... and so on
I tried removing the boiler cover (page 27 figure 36) and when got...
The model I have is Modena 80
http://theinitiativegroup.org.uk/fscinitiativedatabase/ferroli/Modena80.pdf
Boiler fires and works fine for hot water. For Central Heating, it won't fire at all. (switching on/off Central heating has no effect on the boiler display and it doesn't make any sounds...