Grundig uses an unusual signal, I don't have a match on my files of OFA codes. If I find one I'll let you know.
Rob.
http://www.hifi-remote.comTechnical note:
Grundig uses a bi-phase LSB signal. It appears to have an 8-bit device code sent once and an 8-bit command code which is repeated. The TV signal appears to have a device code of 255 (or possibly 0). IR freq=30.5KHz. Time units = 0010 and 0020 (in hex).