Biasi GARDA HE MK2 no hot water

I have a I have a Biasi GARDA HE Combi boiler model MK2 M96A.28SM/B. It produces hot water for very short time only- not enough time to have a shower. I observed that in those cases boiler flame goes on and off, not staying on for long enough. Central heating works normally. Any idea what happened? Restarting does not solve the issue.

Alan

Hi Alan,

I would suggest simple heat exchanger replacement. You will find the description in the “troubleshooting” section of this page, and can buy the part in the shop. Naturally you should be using qualified personnel for this.