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- 12 Jan 2006
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I have had no end of problems with my Puma 80 recently. First water pump failed, and I replaced the head. Boiler was fine for more than a week after but then fan failed. After the fan was replaced, I decided to add some sludge cleaning chemicals as during pump change week earlier I have noticed corroded bits in CH water. I also did try to flush system using mains pressure as explained on some posts here, fed via filling loop and released on drain off point. I was careful not to have more than 2.5 bar pressure.
Once boiler was fired up it started having problems with pilot flame going out after 3o minutes or so on CH. Also radiators appear to take bit more time to get hot but they do get hot. I have reduced flow through bypass valve to improve flow in rads and it helped radiators getting hot but pilot light still goes out. What could be problem here., I have searched this forum but many examples do not make much sense to me, especially this series of faults.
Is it possible I had done something to disturb pilot flame (it is fine all time if boiler is on standby mode only problem on CH mode) I suspect some sort of overheat protection kicks in. I have removed wires from DHW temp sensor and DHW limit sensors and have put them back on. Could something be disturbed by flushing or stuck after sludge got disturbed?
Other than pilot flame it all looks fine, no leaking hot taps, pump works fine set on 3 as advised on this forum. I believe I have purged air from boiler and all radiators, AAir Vent cap/screw is loose. Only difference is slight noise as CHW is pumped it appears to be some dirt in there.
Any help please. sorry for long description.
Once boiler was fired up it started having problems with pilot flame going out after 3o minutes or so on CH. Also radiators appear to take bit more time to get hot but they do get hot. I have reduced flow through bypass valve to improve flow in rads and it helped radiators getting hot but pilot light still goes out. What could be problem here., I have searched this forum but many examples do not make much sense to me, especially this series of faults.
Is it possible I had done something to disturb pilot flame (it is fine all time if boiler is on standby mode only problem on CH mode) I suspect some sort of overheat protection kicks in. I have removed wires from DHW temp sensor and DHW limit sensors and have put them back on. Could something be disturbed by flushing or stuck after sludge got disturbed?
Other than pilot flame it all looks fine, no leaking hot taps, pump works fine set on 3 as advised on this forum. I believe I have purged air from boiler and all radiators, AAir Vent cap/screw is loose. Only difference is slight noise as CHW is pumped it appears to be some dirt in there.
Any help please. sorry for long description.