Help please. I'm only getting boiling hot water!

[buz1980]

HI I have a ferroli modena 102 combi boiler and the hot water only seems to be one temperature which is boiling hot.
Turning the temperature adjustment down does not not make any difference. This has been a constant problem since I moved in to house 1 year ago just never got round to fixing it.
Any help is appreciated
After reading the manual for boiler I think it may be the temperature sensor for the domestic hot water flow.
I've found the part ( I think this is it, http://www.boilersparesdirect.co.uk/parts-online/shopexd.asp?id=36783 ) for £20 but its for two sensors, does that mean I would have to change the sensor on the central heating aswell ( the heating works fine ).
Also if this is the problem is it hard to change the sensors or would it be advised to call in a pro.
Thanks

 

[Agile]

The nfirst thing to do is let the boiler become completely cold.

Then measure the resistance of the two sensors!

Tony

 

[buz1980]

thanx for the reply. think i'll just get someone in to do it, i'm ok at plumbing but dont know much about central heating