Combi Boiler Possible Problem/s

Ok for the last month or so my boilers been playing up. It's just recently been serviced. It was set to hot water only for the summer months and about 2 weeks ago I switched it over to the hot water and heating setting. The LED display will show error codes in the form of 01 to 09. Today I had another 01 which says that the boiler failed to ignite and I just move the selector switch to the reset position for 10 secs. This sorted out that problem. The other problem/s have been that the boiler is not showing any error code but there is a LED that is green to show power is on but it's been showing red quite a lot even though the boilers is switched on at the mains and there's been no power cuts. Any thoughts as to why it's switching off?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.