Baxi Boiler problem?

Hi I have a Baxi Solo 3 PFL 30/80 Boiler, last night I noticed a clicking noise from the boiler in the kitchen and a smell not quite burning but more overheating and dust.
Took off the front panel the boiler on was illuminated and the fan on light was flashing on and off in time with the clicking noise.

Turned it off then on this morning the same problem and radiators dont warm up obviously, I currently have hot water but think that is just the reserve that was already heated?

Anyone help me?

Thanks
Jay Wright