Hot water tap on, but no hot water, however CH comes on!?

[EddieJT]

I installed my Sabre combi condesning boiler about 6 weeks ago and have had it connected and commisioned.

All was well until today. I turned on the HW tap, and waited for the water to heat up but it never got above luke warm. I could hear the boiler kicking into life though. Then I noticed the radiator was getting hot, even though I had the CH off.

So I left the hot tap running and investigated the boiler. The CH feed pipe was red hot (depsite CH being turned off), and the HW pipe was luke warm.

Is this a common fault. There is obviously something wrong here.

 

[bellairaphon]

if you got it comissioned then you should have warranty? but if not installed to mi's then you will not be covered. sounds like a divertor problem and more than likely due to system not been flushed correctly.

Nath

 

[fanboy]

Possible problem with your 3 way valve cartridge, bobbin more than likely swollen or bent, passing hot water through your heating side partially.

 

[EddieJT]

Thanks guys. Will have to check this then. I certainly flushed it out properly, and eveything is brand new...new rads and pipework as the place had no CH at all previously.