Hi I had a similar problem and resolved it by fitting a new thermostatic microswitch/rectifier loom assembly, costing £23.34. I ordered it from 01959560010 and received delivery next day.
Mal, Lisburn, Northern Ireland, May 2009
Hi, I don't know what the exact problem is - but if you ring Aqualisa's Technical Helpline they will be able to give advice - they are really helpful and will tell you what the problem is..their number is: 01959 560010.