TABLE OF CONTENTS
- Quick Troubleshooting
- 1. Headset Does Not Turn On
- 2. Bluetooth Is Not Connecting
- 3. Headset Powers Off Before Pairing
- 4. Headset Does Not Reconnect
- 5. Bluetooth Connected but No Sound
- 6. Music Controls Are Not Working
- 7. Calls Are Not Working
- 8. Voice Assistant Does Not Activate
- 9. Music / Game Mode Does Not Change
- 10. Dual-Device Pairing Is Not Working
- 11. Headset Is Not Charging
- 12. Low-Battery Alert
- 13. Headset Keeps Disconnecting
- 14. Reset / Clear Pairing Record
- Still stuck?
Quick Troubleshooting
| Issue | First Step |
|---|---|
| Headset does not turn on | Charge it and press/hold the MFB for about 4 seconds |
| Bluetooth is not connecting | Re-enter pairing mode and select Harmonics Y4 |
| Headset powers off before pairing | Connect within the 5-minute pairing window |
| Headset will not reconnect | Select Harmonics Y4 from the phone's saved devices |
| No sound | Check Bluetooth connection and phone/headset volume |
| Next/previous track does not work | Long-press Volume Up / Volume Down |
| Calls are not working | Check Bluetooth call audio and use the MFB |
| Voice assistant does not open | Press and hold the MFB for about 2 seconds |
| Music/Game mode will not change | Triple-click the MFB |
| Dual pairing is not working | Follow the Device 1 / Device 2 pairing sequence |
| Headset is not charging | Check the Type-C cable and 5V/1A power source |
1. Headset Does Not Turn On
- Connect the headset to a suitable USB Type-C charging source.
- Check that the power source is rated 5V/1A.
- Allow the headset to charge.
- Press and hold the MFB for about 4 seconds.
- Check whether the LED flashes red and blue or a voice prompt plays.
2. Bluetooth Is Not Connecting
- Press and hold the MFB to turn on the headset and enter pairing mode.
- Check that the red and blue LEDs flash alternately.
- Turn on Bluetooth on the phone.
- Search for Harmonics Y4.
- Select the headset to pair.
- Keep the phone within approximately 10 metres.
- If it still does not connect, clear the pairing record and try again.
3. Headset Powers Off Before Pairing
If the headset is not connected within approximately 5 minutes, it powers off automatically.
- Turn the headset on again.
- Wait for the pairing indication.
- Open Bluetooth settings immediately.
- Select Harmonics Y4 before the timeout.
4. Headset Does Not Reconnect
- Turn on the headset.
- Enable Bluetooth on the phone.
- Select Harmonics Y4 from the saved-device list.
- If it still does not connect, clear the pairing record by pressing the MFB four times while paired, then pair again.
5. Bluetooth Connected but No Sound
- Confirm Harmonics Y4 is selected as the audio output.
- Increase the volume on the phone.
- Use Volume Up on the headset.
- Check that playback is not paused.
- Disconnect and reconnect Bluetooth if required.
6. Music Controls Are Not Working
Use the controls as follows:
- Play / Pause: short press MFB.
- Volume Up: short press Volume Up.
- Volume Down: short press Volume Down.
- Next Track: press and hold Volume Up.
- Previous Track: press and hold Volume Down.
- Music / Game Mode: triple-click MFB.
7. Calls Are Not Working
- Confirm the headset is connected to the phone.
- Check that call audio is routed through Harmonics Y4.
- Short press the MFB to answer or end a call.
- Press and hold the MFB for about 2 seconds to reject an incoming call.
- Double press the MFB to redial the last number.
8. Voice Assistant Does Not Activate
- Confirm the headset is connected to your phone.
- Make sure the phone's voice assistant is enabled.
- Press and hold the MFB for about 2 seconds.
- Try again after reconnecting Bluetooth.
9. Music / Game Mode Does Not Change
Triple-click the MFB to switch between Music Mode and Game Mode. Make sure the button press registers as three quick clicks.
10. Dual-Device Pairing Is Not Working
Repeat the pairing sequence in order:
- Pair the headset with Device 1.
- Turn Bluetooth off on Device 1.
- Pair the headset with Device 2.
- Turn Bluetooth back on on Device 1.
- Check whether both devices remain paired.
If the issue remains, disconnect unused Bluetooth devices and repeat the sequence.
11. Headset Is Not Charging
- Connect the Type-C cable securely.
- Use a suitable 5V/1A USB power source.
- Check the cable for visible damage.
- Observe the indicator:
- Red LED on: charging
- LED off with voice prompt: fully charged
- Allow sufficient time for charging to complete.
12. Low-Battery Alert
The headset may play a “Battery low” voice prompt, and the red LED flashes every 5 seconds.
- Connect the Type-C charging cable.
- Charge the headset.
- Wait until charging is complete before extended use.
13. Headset Keeps Disconnecting
- Keep the phone within approximately 10 metres.
- Reduce obstacles between the phone and headset.
- Check whether the phone is switching to another Bluetooth device.
- Reconnect through the saved Bluetooth list.
- If necessary, clear the pairing record and pair again.
14. Reset / Clear Pairing Record
Clear the pairing record by pressing the MFB four times while paired.
- Make sure the headset is paired.
- Press the MFB four times.
- Remove Harmonics Y4 from the phone's saved Bluetooth list if needed.
- Enter pairing mode and connect again.
Still stuck?
If the issue persists after performing all troubleshooting steps, please raise a support request.
Our support team will assist you further.
Support
- Visit: www.portronics.com
- Support Portal: support.portronics.com
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