Arriston combi a30 mffi hot water temp too high fault

[abz86]

Hi,

My hot water temperature gets too hot...even wwhen its set at the minimum setting on the ariston combi A30 mffi boiler. I'm guessing it could be the temperature sensor but the boiler has a external thermostat or temperature sensor connected to the pipework...how would i test these to find out if they were faulty...or any ideas on what else could be the problem...

Any help or suggestions would be great

thanks
abz

 

[Agile]

If it uses NTC sensors you measure the resistance cold. Probably should be 13 k cold.

But it could also be gas settings and a few other causes.

Tony

 

[abz86]

Cheers tony much appreciated...what are the other causes it could be and how would i check the gas settings...the boiler is 3 years old and this problem has occured in the last 3 months....

any help would be great

thanks

Abz