ariston dia 24 cycling on and off

[bmbliv]

I have a Ariston DIA 24 boiler in a 3 bedroom apartment.

It has recently had some work done to it which fixed other problems. One problem however remains. When the boiler has been switched on for between and hour and 90mins it will start to cycle on and off once a minute.

The thermistors have been replaced.

Any advice on the cause of this problem would be much appreciated.

Thanks

Mike

 

[DP]

I would suggest the engineer checks the gas rate.