boiler has leaked brown water and makes loud bang noise

my system is only 5 years old and I have a Glowworm 40 e and a megaflow,
The boiler when starts up ticks four times and then sounds if its going to blow up, after about 5 minutes it has turned itself off again,
Today i noticed the water pressure was quite low so i set it to its orginal pressure setting water has started to come out of boiler,
any suggestions on the correct setting for this,
also should i have instant hot water with this system

thanks

Your description seems very confused!

Better to call Chris R and let him sort it out for you.

Tony

Sounds like an energy saver 40 E ticking could be electrode not lighting and explosive ignition could be electrode,electrode lead,gas valve letting bye.The water problem is probablly condesate leaking possibly new h/exc. the seals go or possible fan leaking or condeaste tube perished maybe blocked condensate pipe which has a cut out on top of the siphon all the above are common problems to this boiler, I have come across recently.