- Messages
- 261
Hi all, waddya reckon? Been to a 'breakdown' today, Potterton Puma 80. The chap's got loads of hot water but no c/h.
1st checked sytem pressure, all good & guage not jammed (it fluctuated as pump came on & off)
2nd checked pump was actually running. Yes but noisy. Using screwdriver stethoscope trick I could hear air whirring around, presumably coz water not actuall going anywhere.
Next proved diverter valve microswitch, all good with that.
The c/h system is in microbore (ALARM BELLS!)
Next the cutomer tells me the house had been empty for a couple of years before he moved in a few months ago, and that the heating had been working fine until last week. No rattling, no clanging & banging.
C/h flow pipe getting hot for 1st couple of meters, return not warming up at all. The boiler is also short cycling.
My instinct is to drain down, sweat off the manifolds & clean em out, refill with a bottle of F1 & see how that goes. If anyone's got any ideas of a boiler fault that might be to blame, I'd like to hear them. Never heard of a combi doing dhw but not heating, usually the other way round innit?
1st checked sytem pressure, all good & guage not jammed (it fluctuated as pump came on & off)
2nd checked pump was actually running. Yes but noisy. Using screwdriver stethoscope trick I could hear air whirring around, presumably coz water not actuall going anywhere.
Next proved diverter valve microswitch, all good with that.
The c/h system is in microbore (ALARM BELLS!)
Next the cutomer tells me the house had been empty for a couple of years before he moved in a few months ago, and that the heating had been working fine until last week. No rattling, no clanging & banging.
C/h flow pipe getting hot for 1st couple of meters, return not warming up at all. The boiler is also short cycling.
My instinct is to drain down, sweat off the manifolds & clean em out, refill with a bottle of F1 & see how that goes. If anyone's got any ideas of a boiler fault that might be to blame, I'd like to hear them. Never heard of a combi doing dhw but not heating, usually the other way round innit?