Broadlink RM4 devices learn and transmit IR and RF signals to control TVs, AC units, and other devices. This guide covers common setup and control issues.
Device Won't Connect to WiFi
Initial pairing problems:
- 2.4GHz only: Broadlink only works with 2.4GHz WiFi
- AP Mode: If fast pairing fails, try AP Mode in app settings
- Reset device: Hold reset button until LED blinks rapidly
- Password: Avoid special characters in WiFi password
- Correct app: Use Broadlink app (not BroadLink DNA or others)
IR Commands Not Working
When learned IR signals don't control devices:
- Line of sight: IR requires direct line of sight to device
- Distance: Move RM4 closer to the device or use IR extender
- Re-learn: Point original remote directly at RM4 when learning
- Device database: Try loading device from Broadlink's cloud database first
- IR blaster: Consider IR extender cables for hidden equipment
RF Commands Issues (RM4 Pro)
For RF-capable models:
- Frequency: RM4 Pro supports 433MHz RF - verify your device uses this frequency
- Learning mode: Select RF mode before learning RF remotes
- Rolling codes: Devices with rolling codes (garage doors, security) won't work
- Signal strength: RF has better range than IR but still needs reasonable proximity
Home Assistant Integration
Local control with HA:
- Broadlink integration: Use official Broadlink integration in HA
- Learn commands: Can learn commands directly from HA
- Scripts: Create scripts to send learned command sequences
- Local only: Works without cloud once configured
- Climate entity: AC units can appear as climate entities with proper setup
AC Control Tips
For controlling air conditioners:
- State-based: AC remotes send full state each press - learn all combinations
- Use e-Control: Broadlink's AC database handles this complexity
- Temperature range: Learn commands for each temperature setting needed