Ok, I don't have one of the Quick Touch 2 receiver boards to look at (I've only got the Quick Touch 1), but after looking at the manual, I think the two leds are "power" and "rs-485"
The 485 led is supposed to light up when a command is received - i.e. a button is pressed on the remote. Which of course you can't test if it won't pair. I'm not sure if the 485 led also lights up when you press an aux button on the outdoor board.
Either your card is bad, the cabling is bad, or the comms isn't working on your outdoor board.
- You can rule out a cabling problem by testing continuity of the wires with a multimeter (shut the power off first).
- To rule out the outdoor board's comms you have to see if anything else works on the comm port. Do you have anything else that uses the comm port (like a pump)? If so, shut your pool down and connect just one thing at a time to see if anything works.
- I might also test the button just to make sure it hasn't failed... you can also do this with the continuity setting on a multimeter