Ferolli Modena 102

[JonB]

I have just changed the 2 thermisters CH & DHW to cure the hot water going on & off. Now working OK. But I noticed when I turn on the cold tap at the sink the boiler clicks & the hot light on the boiler comes on (just a quick flash) could it be a faulty flow switch, It was OK before the thermister change. Any ideas please.

Cheers
JonB

 

[Agile]

For some reason the thermistors often fail on this model.

I dont know what you mean by the "hot" light.

Any two wire flow switch can be shorted to simulate the operation of the switch.

Tony

 

[JonB]

Thanks for the reply Agile Sorry I mean the hot water light on the panel, wich comes on when the DHW is running.

JonB

 

[Agile]

No, its just that you have some air in the hot water pipe.

It will probably disapear after a few days. Just ignore it!

Tony Glazier