... thanks for the reply, and eventually I have found one that works and typically its the cheapest one Ive tried!
I bought it from the Chinese Store in Sabinillas a few doors down from Mercadona..... cost me 6 euros! :-) ... and the first code I entered for Trane worked.... so finally sorted. Ive since seen the same model on Ebay too.
Its a small unit with
"1000 in 1
Universal A/C Remote"
at the top and the 'make' appears to be "CHUNGHOP" which is capitals at thh bottom of the unit
The model number is: K-1028E ... which is displayed just under the LCD screen.
Hope that helps anyone else who has had the same problem.
Ian