Combi Boiler Problems (Biasi)

philen

Hello,

I own a Biasi Riva Compact HE combi boiler that is failing to light. If either the hot water or central heating is switched on, a switch clicks and nothing happens. After a few seconds the LED's on the unit indicate the following error (according to the manual):

"Faulty primary circuit (no water or absence of flow)"

The pressure is at 1.5 bar and there doesn't appear to be any problems with the water pressure. I have bled the radiators and spun the pump but this hasn't helped.

I was wondering if anyone would be able to help me with this problem?

Many thanks.

Cardew

Welcome to the forum.

I am no plumber, but the most common fault for failure to light is the thermocouple I understand.

You might get a better response in the 'In my home' section of this forum; where I think there are some plumbers that give advice

Canucklehead

Hi

There is a sensor somewhere that's not working.
I would say you need to get someone in. Book something through Biasi
Corgi Guy.

philen

Thanks for your replies.

I had a plumber out to look at the boiler a few weeks ago and he couldn't fix the problem. I have now contacted Biasi who have given me the name of their recommended regional plumber.

Thanks again

philen

Just to follow-up briefly. It is definitely worthwhile going direct to the manufacturer as the recommended engineer fixed my problem quickly (faulty PCB).. AND.. even though the boiler was 6 months out of warranty I called Biasi anyway and they offered to replace the faulty component!

Canucklehead

Hi

Thanks for the feedback.

Corgi Guy.

wilcogas

One of the most popular faults with the HE boilers is that the drainage sump within the boiler blocks with mush from the HE process....these have a sensor fitted to not allow the boiler to 'fire up'
Secondly.. though your pressure gauge reads 1.5 bar, it may be a little blocked with system sludge; your boiler may well have a water pressure switch fitted which if low will not allow the boiler to run!...have this pressure switch removed and clened or replced.