Hi Paul, A/ if the temp on the front does not change and stay there, it means the front module is not tallking to the back module!
This will give you water problems etc ... and your telephone symbol.
Does the freezer show 'CF'
This is confirmation of the above fault.
Hope you still have the old boards, maybe the wrong modules were fitted??
There's a guy on ebay who fixes them.
Hope this helps
jj
December 2009