Is it wired correctly?
The boiler needs a permanent live. If it only has a switch live it will go into a venting sequence for about 10 mins then into a low output sequence for about another 15 mins. (bit of a pain when you are fitting them).
Without a permanent live it will do this every time it starts. But this is just speculation without seeing it.
From cold turn boiler stat up full then if you press the button with the chimney sweep type sign (bottom left) and hold it for about 10 seconds the orange light will come on and the boiler will go to full power.
Hold the pipes under the boiler, left is flow and you should feel the water heating and coming through. Keep an eye on the temp. If the system is running free (no air or blockages, pump running ok) it should take over 10 mins before the temp gets anywhere near max (90 deg on this boiler).
If there is any problem with the circulatuion the temp will rise quickly and when it gets above 90 the boiler will cut off, start a bit banging and clicking and the display starts showing other symbols (can't remember exactly but it can be read as 98 99 102-3 whatever).
The full power can be cancelled by pressing the button again or it will go back to normal after about 15 mins, might go to low output for another 15 mins.
Better to get someone to check it out. Whatever it is it should not be hard to fix.
These are good boilers.
The boiler needs a permanent live. If it only has a switch live it will go into a venting sequence for about 10 mins then into a low output sequence for about another 15 mins. (bit of a pain when you are fitting them).
Without a permanent live it will do this every time it starts. But this is just speculation without seeing it.
From cold turn boiler stat up full then if you press the button with the chimney sweep type sign (bottom left) and hold it for about 10 seconds the orange light will come on and the boiler will go to full power.
Hold the pipes under the boiler, left is flow and you should feel the water heating and coming through. Keep an eye on the temp. If the system is running free (no air or blockages, pump running ok) it should take over 10 mins before the temp gets anywhere near max (90 deg on this boiler).
If there is any problem with the circulatuion the temp will rise quickly and when it gets above 90 the boiler will cut off, start a bit banging and clicking and the display starts showing other symbols (can't remember exactly but it can be read as 98 99 102-3 whatever).
The full power can be cancelled by pressing the button again or it will go back to normal after about 15 mins, might go to low output for another 15 mins.
Better to get someone to check it out. Whatever it is it should not be hard to fix.
These are good boilers.