Recent content by crapheatingsystem

i give up,tried balancing,closing off all the upstairs rads,then all downstairs become hot(so don't think its blockage)turn on 1 rad upstairs and all downstairs go cold within minutes,tried balancing,had trvs off pump running at speed 3 or 2.very hot water gushes out down stairs rads(indicates...

thanks for that.does it sound feasable what ive described,some times the rads are luke warm down stairs,if its a blockage on the return circuit where do i start.as far as i can see just 2 pipes lead out of the boiler(mtd outside oil fired camray),they go up to copper tank from tank 2 pipes...

ive read all the answers to the cold radiators down stairs syndrome,and ive tried everything and im totally baffeled.all rads downstairs cold.some on the old micro bore plastic some modified onto 15mm bore plastic still nothing all except 2 rads have the trvs.bathroom rad has 15mm copper pipes...