ideal isar preheat

[pearcy90]

Hi

Im a service engineer but my company is starting to get me into breakdowns i recently attended a isar to replace a leaking aav and a dhw thermistor but it keeps running preheat and rads upstairs are hot is this likely to be the cartridge or head?

Apologies if this is in the wrong section

Thanks

 

[Dan Robinson]

Sign up for the Combustion Chamber section - there a special data repository in there that will help you no end.

 

[Dan Robinson]

Cartridge BTW

 

[pearcy90]

Thanks alot had a feeling it was nothing worse than ordering wrong parts lol