How do you pair a wireless remote to an air control unit?

In order to pair a remote and air control unit that are already known to each other, follow these steps: 

1. Remove one battery from the remote
2. Cycle the pump by unplugging from power, waiting at least 10 seconds, and then plugging it back in
   1. Once the pump is plugged back in and boots up, it will look to pair to a remote for approximately 40 seconds
3. Within 30 seconds of plugging the pump back in, place the battery back into the wireless remote.  The remote will now try to pair to the previously paired air control unit.  
4. Once successful, a number will appear on the remote and it will now operate properly. 
5. You can repeat this for a second previously paired remote without disrupting the pairing of the first.

If you need to pair a new remote and pump combination (for example if you recently received new remotes) please follow the instructions in the article: How do you Pair a New Pump and Remote Combination