Hi Paul, before you buy new parts make sure that the old one are not repairable, some time you just need to reactivate the thermostat pressing the little red swicth, so you dont need any parts!!Phone Servis uk at 0121 5263192 (techinical line ) and they will help to find the problem. You can also send them an email (technical@servisuk.co.uk) and will replay to you the same day, they can also send you the wiring diagram so you can locate the termostat,all of this is free of charge
sauro, July 2008