This is a long one, so you better have a nice cold drink or a cuppa to hand!!
I've been having a problem with my C28 5 year old for a while now where CH fires up for 30seconds then goes off for 15 seconds then back on again for 30 seconds etc etc... HW runs hot/warm/cold cold cold cold and back again. This has now gradually gotten worse.
I was advised to change thermisters and see if this worked, so i did and still no joy!
While i was doing this i noticed that the DV motor was leaking so replaced that and still no joy. The pin does move so not sure if this is the next thing to look at the DV valve service kit?
Anyways, Agile quite rightly suggested (from another post) on checking the heat exchanger for blockages so i did the following:
Stripped the boiler down, cleaned the exchanger with Dam Buster gear and it was pretty clean nothing really came out. Flushed it for ten mins with hosepipe so nothing else in there.
Put it all the boiler back together and the DV started to leak again! So took it back off and checked it all again, it had water inside, so dried it with hairdryer and put silicone paste round it and clipped it back together and now it doesn't leak.
Put pressure back in system and all fine no leaks!
Booted the boiler up and only put on HW setting run the hot tap = Freezing cold! Ran for 10 mins still freezing! As i went to turn off the tap I brushed past my radiator in the kitchen and it was on, bloody roasting! So i turned off the tap and the radiator started to cool! At this point i was starting to cry with laughter and the missus thinks ive gone one flew over the cuckoo's or started on the sambuca early!!
So next thing i tried was switch on constant CH and the radiators fire up all nice n cosy! So i'm thinkin at least we got heating now!!
So i go back to the boiler and notice that the pressure is rising from 1.5, 1.7, 2.0, 2.5, 2.7 within ten minutes, so i switched it off before it went pop and took down my garage and then grabbed a cuppa and decided to start a new post, so here i am!
The missus ain't too happy at the moment as we ain't had heating or hot water for 2 days. At least we've got a elec shower, it's just not the best thing to be using to heat the house and do the dishes with though.
So something has got to start working pretty soon or crimbo is going to be spent round the neighbors!!
Agile, i started this post off here as the other one was getting a bit long and with the other being an old post i thought it would be best to start this one i wasn't fobbing you off m8 and cheers again for your reply! What do you think i could try next? And anyone else wants to throw some ideas at me i'm all ears even if there cold one's!!
Right time for a sambuca me tinks!
Pete
I've been having a problem with my C28 5 year old for a while now where CH fires up for 30seconds then goes off for 15 seconds then back on again for 30 seconds etc etc... HW runs hot/warm/cold cold cold cold and back again. This has now gradually gotten worse.
I was advised to change thermisters and see if this worked, so i did and still no joy!
While i was doing this i noticed that the DV motor was leaking so replaced that and still no joy. The pin does move so not sure if this is the next thing to look at the DV valve service kit?
Anyways, Agile quite rightly suggested (from another post) on checking the heat exchanger for blockages so i did the following:
Stripped the boiler down, cleaned the exchanger with Dam Buster gear and it was pretty clean nothing really came out. Flushed it for ten mins with hosepipe so nothing else in there.
Put it all the boiler back together and the DV started to leak again! So took it back off and checked it all again, it had water inside, so dried it with hairdryer and put silicone paste round it and clipped it back together and now it doesn't leak.
Put pressure back in system and all fine no leaks!
Booted the boiler up and only put on HW setting run the hot tap = Freezing cold! Ran for 10 mins still freezing! As i went to turn off the tap I brushed past my radiator in the kitchen and it was on, bloody roasting! So i turned off the tap and the radiator started to cool! At this point i was starting to cry with laughter and the missus thinks ive gone one flew over the cuckoo's or started on the sambuca early!!
So next thing i tried was switch on constant CH and the radiators fire up all nice n cosy! So i'm thinkin at least we got heating now!!
So i go back to the boiler and notice that the pressure is rising from 1.5, 1.7, 2.0, 2.5, 2.7 within ten minutes, so i switched it off before it went pop and took down my garage and then grabbed a cuppa and decided to start a new post, so here i am!
The missus ain't too happy at the moment as we ain't had heating or hot water for 2 days. At least we've got a elec shower, it's just not the best thing to be using to heat the house and do the dishes with though.
So something has got to start working pretty soon or crimbo is going to be spent round the neighbors!!
Agile, i started this post off here as the other one was getting a bit long and with the other being an old post i thought it would be best to start this one i wasn't fobbing you off m8 and cheers again for your reply! What do you think i could try next? And anyone else wants to throw some ideas at me i'm all ears even if there cold one's!!
Right time for a sambuca me tinks!
Pete