WORCESTER BOSCH CDi COMBI BOILER?

MY BOILER KEEPS STOPPING. i BELIEVE THE PIPES FITTED ON OUTSIDE WALL OF BOILER KEEP FREEZING UP AND STOPPING THE BOILER WORKING.

I KEEP POURING VERY VERY HOT WATER ON THE PIPES AND I MANAGE TO GET MY BOILER WORKING AGAIN. HOWEVER, IT KEEPS FREEZING UP.HAPPENING EVERY FEW DAYS IN THIS COLD WEATHER. i BELIEVE THE PIPES DO NOT HAVE ENOUGH LAGGING ROUND THEM. COULD EXTRA LAGGING OF THE PIPES HELP TO STOP THIS PROBLEM ?

I HAVE CONTACTED YOU TODAY BY FILLING IN YOUR FORM ASKING FOR AN ENGINEER TO COME OUT TO MEND MY BOILER.

I AM 72 YRS OF AGE AND WONDER IF YOU COULD HALP ME TO SORT THIS PROBLEM OUT.

THANKING YOU