RadKick 7-Speed and Belt Drive (2024) error 30 / connector check guide

Use this procedure to check the cable connections on your RadKick that may be causing electrical error messages or preventing the ebike from powering on. An error 30 message indicates there is communication error between the controller and the color display, which can be the result of anything from a loose connector somewhere on the ebike, a damaged electrical cable, or a faulty controller. This process will require you to power down your ebike, unplug individual cables and inspect them for damage, then carefully reconnect them and power on the ebike to see if that resolved the issue. Repeat the process with each cable until the issue is resolved, or you isolate the problem to a specific component.

The cables and troubleshooting steps are the same for the RadKick 7-Speed and RadKick Belt Drive models.

Tools needed:

• Small Phillips head screwdriver
• Flat-side cutters
• Replacement zip ties
• Electrical tape
• Bike stand (optional)
• Nitrile gloves (optional)

1. Get the ebike ready for maintenance. Turn off the ebike, remove the battery, and press and hold the power button to discharge remaining power.
2. Inspect the battery and battery mount terminal contacts. If the contacts are damaged, dirty, or wet, the part may need to be replaced. Take a photo and contact Rad Power Bikes Product Support for help. If the contacts are in good condition, set the battery aside for now.
3. Inspect the wiring harness cables. The wiring harness connects all of the components on the front of the bike in a single cable that routes to the controller at the rear of the bike. 
   1. Unplug each of the following cables (see diagram) at the front of the bike one at a time. You may need to uncoil the cable cover to reach some of the connectors. Snip any nearby zip ties if you need cable slack, and pull each side of the connector apart, without twisting, to unplug.
      • Front brake sensor
      • Rear brake sensor
      • Throttle
      • Color display
      • Headlight
   2. Inspect the inside of the connector. If the inside is damaged, dirty, or wet, the part may need to be replaced. Take a photo and contact Product Support for help.
   3. Plug the connector back in, reinstall the battery, turn the bike on, and check whether the error is resolved. Repeat the process for each cable one at a time to try and isolate the source of the error.
   4. If the wiring harness cables are not the source of the error, proceed to check the connections to the controller inside the frame downtube (see diagram).
4. Inspect the controller cables. The controller is installed inside the frame downtube, directly beneath where the bottom of the battery mounts. 
   1. Use a small Phillips head screwdriver to remove the bottom battery mount.
   2. Unplug each of the following cables (see diagram) one at a time. Pull each side of the connector apart, without twisting, to unplug. 
      • Battery
      • Wiring harness
      • PAS
      • Motor (mounted on the chainstay on the drive side of the bike)
      • Taillight
   3. Inspect the inside of the connector. If the inside is damaged, dirty, or wet, the part may need to be replaced. Take a photo and contact Product Support for help.
   4. Plug the connector back in, reinstall the battery, turn the bike on, and check whether the error is resolved. Repeat the process for each cable to try and isolate the source of the error.
   5. If the issue persists after checking all cable connections, contact Product Support.
5. Reinstall the controller. If you resolve the issue, reinstall the controller.
   1. Reconnect the motor connector on the chainstay. Replace the zip tie connection to secure this cable length on the chainstay, if previously removed.
   2. Reconnect the battery connector, PAS, wiring harness and taillight cable connectors, and press together without twisting. Use electrical tape to bundle these cables together tightly so that they will fit inside the frame downtube opening along with the new controller.
   3. Mount the controller in the frame downtube on top of the bundle of cables, and ensure they are pushed as far down as possible so that the battery mount can be reinstalled properly.
   4. Reinstall the battery mount in its original position, and use the screwdriver to reinstall the mounting bolts until secure.
6. Reinstall the battery, test the bike fully, and ride Rad!