Replaced the sensor and it did not made any difference.
Module on the rear looks clean but then obviously I can’t tell if one relay is faulty. My hunch is the relay switches on the module being faulty as it is not responding to the temperature setting of 160 degs. The display panel is showing the actual temperature until it reached to the set temperature yet still over heating.
owner is keen to have it repaired, and I just wanted to be sure that I am not making a expensive mistake. What have others found?
thanks Matt