Hi There are 2 sensors above the heater element these need to be changed as a pair. Before taking them out make sure you know where the green dot marked one goes and the unmarked on as they are 130 and 106 degrees respectively. I took mine out before checking and now am not sure if i've got them back correctly if you know which way round they go could you please let me know at
help_my_creda@blueyonder.co.uk
Hopes this helps you
Emil
September 2005