NTSC VHS to HDD or DVD

Hi i have just bought myself a FUNAI HDR A2635 DVD - VCR - HDD machine and would be grateful if somebody could explain to me why I cannot copy a NTSC VHS video to the hard drive or dvd ( there is no problem with PAL video tapes ) Is there some sort of protection that stops you copying between different regions ? if so is there a way round it. My NTSC video tapes are not protected just old home movies made on a NTSC camcorder. The unit i bought is not region free and at present am unable to locate any info on making it region free, if this is possible would it then copy these tapes ?