Biasi M90.24s no temperature control on hot water

[khsofiane]

hi

I have a problem with my Biasi M90.24s boiler, the D.h.w temp control does not seem to work, water temperature is too hot and I can't adjust it any ideas?

thanks

 

[Agile]

That would be a very unusual fault.

I am inclined to think that its not actually a fault but as a result of the boiler not having been set up correctly. Or having been fiddled with !

Was it installed by a CORGI registered installer?

Has it ever been serviced by a competent engineer?

Has anyone been fiddling with it?

Tony Glazier

 

[David937]

Sorry to hijack but my Uncles 24S has the same problem, anyone who goes there is warned of the scalding hot water.

 

[mehran]

David937 I would check that the gas burner pressure is correctly set-up(min and max) then look at the temp sensors(ntc's)

 

[Agile]

The 24S has a completely different temperature control system.

I dont think that David is competent to go round measuring gas pressures!

Tony

 

[kevplumb]

makes you wonder if the pratt giving the advice is either

 

[David937]

David937 I would check that the gas burner pressure is correctly set-up(min and max) then look at the temp sensors(ntc's)

I don't think I'll try that, but thanks for the advise anyway.

He did get it serviced last year.

 

[Agile]

One of the most important aspects of a service is checking and resetting the min and max burner pressures.

They tend to drift a little on the M90.

Few were set up properly when they were installed anyway.

Tony