Broadlink RF and momentary buttons?

I have a Harbor Breeze fan that has a remote control that i am trying to add to a Broadlink RM4Pro. the issue that i am having is that all the buttons on the remote are momentary buttons (that is, no matter how long i hold the button for, the remote only sends the code once). This makes it impossible to learn the codes with HA or pretty much any other tool that tries to sweep for the frequency. in looking at the FCC website i see that this remote sends on 315Mhz. is there a way to tell HA to learn a code on that specific frequency so i can avoid trying to get it to sweep for the 315Mhz band?