boiler will not heat water. ?

is your boiler
atmospheric burner?
premixed burner?
wall hung?
floor standing?
fan flued?
room sealed?
open flued?
gas?
solid fuel?
oil?
LPG?
hydrogen fuel cell?
S plan?
Y plan?
open vented?
sealed system?
solar powered?
nuclear powered?
etc..
etc..
etc..

i could have avoided all these questions if only you had provided the following information
boiler make
boiler model
any fault indicator lights flashing
in what sequence
does problem affect DHW or CH or BOTH

a centipede walks into a doctors surgery
doctor asks whats the problem
my toe hurts says the centipede
which toe asks the doctor
i dont know says the centipede
your just going to have to check them all doctor
if the centipede has over 100 pairs of legs
& 10 toes on each foot
how long would it take the doctor to identify the problem toe?

manwithnoname
May 2011