Hanimex TZ325 Flash + RF-602's

[Ben-BSH]

I have this flash, it's very old but does what it needs to, I'm either being very stupid, or missing something as my RF-602's will not "fire" it. the LED light comes on when the remote is pressed, it will fire a 560 II on the same reciever no issues. but the TZ325 will just not fire, it will fire however on my camera hotshoe, so does anyone have any ideas why it will not work?! :thumbsdown:

Many thanks in advance!