Within twenty minutes, the cast iron was radiating a fierce, dry heat.
Before attempting any unblocking, confirm the problem: unblocking microbore central heating pipes
: The boiler turns on and off rapidly because the water cannot circulate through the narrow pipes fast enough to dissipate heat. Within twenty minutes, the cast iron was radiating
"Yes!" Arthur hissed.
Never use aggressive one-hour flushers (e.g., Fernox F5) in blocked microbore – they can loosen a large slug of sludge that jams the pipe completely. Within twenty minutes