Vented CH system
Ideal Classic boiler (15y old)
CH header tank in loft
I have a strange problem where I intermittently have very loud banging (kettling) from the boiler, loud noises from the loft header tank which is steaming with boiling water coming down the overflow into the header tank. The water is so hot that it has melted the actual upvc overflow pipe that goes outside the house (melting a joint which spewed water all over the plasterboard ceiling!)
From some research, I have -
1. changed the overheat thermostat in the ideal boiler (step 56 in manual below).
2. Drained system and put fernox cleaner in (we already have a manga clean fitted)
These two steps have not fixed the issue. There are some steps in 57 that replace the thermostat control and sensor lead. Should I be doing this next or has anyone out there got some good advice as to what this could be. I have googled a lot!
Thanks in advance.
http://library.plumbase.co.uk/flipbooks/RE/idcl270ff_22371_t/mobile/index.html#p=23
Ideal Classic boiler (15y old)
CH header tank in loft
I have a strange problem where I intermittently have very loud banging (kettling) from the boiler, loud noises from the loft header tank which is steaming with boiling water coming down the overflow into the header tank. The water is so hot that it has melted the actual upvc overflow pipe that goes outside the house (melting a joint which spewed water all over the plasterboard ceiling!)
From some research, I have -
1. changed the overheat thermostat in the ideal boiler (step 56 in manual below).
2. Drained system and put fernox cleaner in (we already have a manga clean fitted)
These two steps have not fixed the issue. There are some steps in 57 that replace the thermostat control and sensor lead. Should I be doing this next or has anyone out there got some good advice as to what this could be. I have googled a lot!
Thanks in advance.
http://library.plumbase.co.uk/flipbooks/RE/idcl270ff_22371_t/mobile/index.html#p=23