Hi
Ok first post, so be gentle. I've had a good look through previous posts but not seen anything that helps my uneducated eye...
I have the above boiler situated in the garage. It supplies 13 rads, normal domestic use. Bit of background first:
I used to have an issue that it started 'ketterling' and overheating therefore tripping and requiring a reset. This happened everytime the boiler started, after 10 mins or so. Let it cool, same thing happened.
On advice, I've had a power flush done. We live in a very hard water area and I don't believe its ever been done. However, even though the house is 1950's, the boiler is of course newer (though how old not sure?) So it may have been done pre-install - unlikely though. Anyway, the situation is much improved. Less banging from the boiler, radiators/pipes all good and a lot less noise too. I pushed the boat out and had a magnaclean installed for good measure.
The power flush seems to help the reset issue and the boiler stat can be set just under 4 (assuming you want it that high!) with no overheating. Still a small amount of ketterling, but doesn't now overheat.
Now the main issue I have now. This is an intermittent and doesn't happen all the time, but certainly most of:
The boiler starts up, fan starts, clicks etc and pilot light ignites. However, the 'main burn' sometimes doesn't and the pilot light remains lit until the timer switchs the boiler off. I lost the plot a bit this morning and gave the boiler a tap (no more) on the right side at the bottom. It then fired the main burner! But it switched it self off shortly afterwards.
I'd got as far as a faulty air pressure switch looking at other posts but given the 'tap' I took the bottom cover off (I know...) and just checked for a loose connection, which given the intermitted nature might be the issue??
I Very very carefully, without sticking anything in there, checked the connectors where in place. When doing this, I knocked a wire, (which is actually has cloth woven appearance), and boiler kicked in! I moved it again and it switched off. I moved it again and the main burner kicked on and stayed on!
The lead in question is on the lower right has side as you look at the boiler face on. It rises from the PCB and up into the right hand side of the boiler. Its a red lead and seems to go into a block of connectors towards the front on the PCB area, but thats only visually. I've checked the circuit diagram but can't figure it out.
This looks like the issue then, but can you confirm what it does and whether it would explain the symptons? some advice as to what it is and want needs fixing would be much appreicated!
Ok first post, so be gentle. I've had a good look through previous posts but not seen anything that helps my uneducated eye...
I have the above boiler situated in the garage. It supplies 13 rads, normal domestic use. Bit of background first:
I used to have an issue that it started 'ketterling' and overheating therefore tripping and requiring a reset. This happened everytime the boiler started, after 10 mins or so. Let it cool, same thing happened.
On advice, I've had a power flush done. We live in a very hard water area and I don't believe its ever been done. However, even though the house is 1950's, the boiler is of course newer (though how old not sure?) So it may have been done pre-install - unlikely though. Anyway, the situation is much improved. Less banging from the boiler, radiators/pipes all good and a lot less noise too. I pushed the boat out and had a magnaclean installed for good measure.
The power flush seems to help the reset issue and the boiler stat can be set just under 4 (assuming you want it that high!) with no overheating. Still a small amount of ketterling, but doesn't now overheat.
Now the main issue I have now. This is an intermittent and doesn't happen all the time, but certainly most of:
The boiler starts up, fan starts, clicks etc and pilot light ignites. However, the 'main burn' sometimes doesn't and the pilot light remains lit until the timer switchs the boiler off. I lost the plot a bit this morning and gave the boiler a tap (no more) on the right side at the bottom. It then fired the main burner! But it switched it self off shortly afterwards.
I'd got as far as a faulty air pressure switch looking at other posts but given the 'tap' I took the bottom cover off (I know...) and just checked for a loose connection, which given the intermitted nature might be the issue??
I Very very carefully, without sticking anything in there, checked the connectors where in place. When doing this, I knocked a wire, (which is actually has cloth woven appearance), and boiler kicked in! I moved it again and it switched off. I moved it again and the main burner kicked on and stayed on!
The lead in question is on the lower right has side as you look at the boiler face on. It rises from the PCB and up into the right hand side of the boiler. Its a red lead and seems to go into a block of connectors towards the front on the PCB area, but thats only visually. I've checked the circuit diagram but can't figure it out.
This looks like the issue then, but can you confirm what it does and whether it would explain the symptons? some advice as to what it is and want needs fixing would be much appreicated!
