Hi all,
Firstly, great forum, normally I get the info I need from other user's posts, but I guess the time to ask myself has come!
l have a Potterton Combi Boiler (Performa 24). The DHW is working well, when I open the hot water tap the boiler stays on as normal. However I have noticed that during the last week, when switching the CH on, it works okay until the radiators reach a decent temperature, and afterwards all it does is igniting on and off in a loop.
When the CH circuit reaches hot temperature and the CH is activated, the boiler ignites, the flame stays on for a few seconds (~6-8s) and then the flame switches off; 2 seconds after the boiler makes another attempt to switch on, but the same happens and it carries on with the on/off loop.
I do not know much about boilers, but I read on these forums that this behaviour could be due to a faulty microswitch. I have then checked both microswitches (CH which is single pole and DHW which is double pole) on the diverter valve with a multimeter and they seem to work ok. Just for double checking, I have also bypassed the CH microswitch with a wire and the boiler still falls in the on/off loop.
Since I do not know how bad this can be for the boiler, I am not using it at the moment so it's a bit cold in the house!
I would really appreciate if someone could point me in the right direction.
Many thanks in advance,
Henry
Firstly, great forum, normally I get the info I need from other user's posts, but I guess the time to ask myself has come!
l have a Potterton Combi Boiler (Performa 24). The DHW is working well, when I open the hot water tap the boiler stays on as normal. However I have noticed that during the last week, when switching the CH on, it works okay until the radiators reach a decent temperature, and afterwards all it does is igniting on and off in a loop.
When the CH circuit reaches hot temperature and the CH is activated, the boiler ignites, the flame stays on for a few seconds (~6-8s) and then the flame switches off; 2 seconds after the boiler makes another attempt to switch on, but the same happens and it carries on with the on/off loop.
I do not know much about boilers, but I read on these forums that this behaviour could be due to a faulty microswitch. I have then checked both microswitches (CH which is single pole and DHW which is double pole) on the diverter valve with a multimeter and they seem to work ok. Just for double checking, I have also bypassed the CH microswitch with a wire and the boiler still falls in the on/off loop.
Since I do not know how bad this can be for the boiler, I am not using it at the moment so it's a bit cold in the house!
I would really appreciate if someone could point me in the right direction.
Many thanks in advance,
Henry