I have a ariston boiler which seems to broken down.

Solid fuel room heaters with a back boiler can have fairly complex air and damping controls. Driving older types was just as complex as driving a car, though slower, with the boiler damper, flue damper and air control.

In time manaufacturers wanted to widen the appeal of the products and began to refine the designs and make some of the functions automatic or semi-automatic.

I suggest you revisit the instruction manual and if you can't make the fire slumber, or damp it down so it sleeps for the night or close down the hot water, it is probably something inside has seized or broken.

Using excess fuel and constantly boiling the water is a sure sign too much combustion air is reaching the coals. If the coals glow brightly from the fire base excess air is entering the ash space or getting in below the fire basket. If the base is cooler and the top of the fire is hotter the air is being drawn across the fire. This is difficult to avoid if the design uses an air curtain to keep flame and soot away from the door glasses but it could mean an internal air passage needs clearing.
It could be time to take the heater apart for a thorough clean, inspection, replace gaskets and any corroded or broken parts including the clay liners.

Good luck!

http://www.worcester-bosch.co.uk/homeowner/literature/gas-boiler-literature/greenstar-15ri-literature. Hope this helps :)

Is there gas cause most of the time it won't ignite cause there is no gas. What you can do is light it your self and if it lights that is good and if it stays light than there is has sometime you have to light it your self

How do I set the timer on my Ariston E-Combi gas boiler

Lack of pressure in the primary circuit [radiators] Look for a pressure gauge should read between 0.5 & 1.5 bar
Somewhere there is a tap/valve/pipe connection to refill & looks like a small thumb turn or a screwdriver turn on a connection on the mains water inlet pipe. turn on until you get the right pressure then off

This is the manual for your boiler. I hope the information contained in the manual will help you identify your problem.

http://www.ariston.co.uk/uploads/doc47e92b04013d8.pdf

heres a copy of the serviceing manuel for the unit. just click on the link and download the manual. http://www.ariston.co.uk/uploads/doc482c2cada6e71.pdf good luck

have you tried to put some cleaner into the system it siounds like you may have a circulation problem

its not definately the pcb. change the detection sensor first( £3.20p). if this doesnt fix a01 fault then change the main pcb(£145).