Projecta IQD2 Display Bluetooth Connection Issues – FAQ

Why won’t my Projecta IQD2 display connect to Bluetooth?

The IQD2 display may fail to connect to the mobile app if there is a temporary communication issue between the IQD2 display, the IDC25X control unit, and the mobile device.

This can sometimes happen after a system update, power interruption, app update, or reconnection of system components.

Is this always a fault with the IQD2 display?

Not always.

In many cases, the issue is caused by a temporary communication or pairing problem rather than a hardware fault. A full power reset, LINbus connection check, and app reinstall will often restore Bluetooth connectivity.

What should I try first?

Start with a full system power reset.

1. Power down the IQD2 display and IDC25X control unit.
2. Disconnect both units from their power source.
3. Leave the system powered off for at least 30 minutes.
4. Check that the LINbus cable is securely connected between the IQD2 and IDC25X.
5. Reconnect both units and power the system back on.
6. Open the mobile app and try connecting again.

Why do I need to leave the system powered off for 30 minutes?

Leaving the system disconnected for around 30 minutes helps clear temporary stored states in the system.

This allows the IQD2 display and IDC25X control unit to restart and re-establish communication correctly.

What is the LINbus cable and why is it important?

The LINbus cable is the communication link between the IQD2 display and the IDC25X control unit.

If the LINbus cable is loose, damaged, or not fully inserted, the IQD2 may not communicate correctly with the IDC25X. This can prevent the display from connecting properly to the mobile app.

How do I check the LINbus connection?

Check the following:

• Confirm the LINbus cable is fully inserted at both ends.
• Check the cable for damage, wear, cuts, or fraying.
• Make sure the plug is not loose.
• Confirm the cable has not been pulled, pinched, or bent sharply.
• Replace the cable if it appears damaged.

Should I reinstall the mobile app?

Yes, reinstalling the app is recommended if Bluetooth connection still fails after the system reset.

Follow these steps:

1. Uninstall the Projecta app from your mobile device.
2. Restart your phone or tablet.
3. Download the latest version of the app from the Apple App Store or Google Play Store.
4. Open the app and allow all required permissions.
5. Try pairing with the IQD2 display again.

Which phone permissions are required?

The app may require permissions such as:

• Bluetooth access.
• Location services.
• Nearby device access, depending on the phone model and operating system.

These permissions are required so the app can detect and connect to nearby Bluetooth devices.

Can an outdated phone operating system cause Bluetooth issues?

Yes.

If your phone or tablet is running an outdated operating system, Bluetooth pairing may not work correctly with the latest version of the app.

Check that your mobile device is updated to the latest available software version before reconnecting.

What should I check before trying to pair again?

Before reconnecting, confirm the following:

• Bluetooth is turned on.
• You are close to the IQD2 display.
• The IQD2 display and IDC25X are both powered on.
• The LINbus cable is connected securely.
• The app is the latest version.
• Required app permissions have been allowed.
• No other phone or tablet is already connected to the IQD2.

What if the app still cannot find the IQD2 display?

If the app does not detect the IQD2 display, try the following:

• Move closer to the IQD2 display.
• Restart your mobile device.
• Turn Bluetooth off and back on.
• Close and reopen the app.
• Check that no other Bluetooth devices are interfering.
• Repeat the full 30-minute power reset procedure.
• Confirm the LINbus cable is secure and undamaged.

Should I perform a factory reset?

A factory reset should only be used as a last resort.

Before performing a factory reset, complete the full power reset, LINbus check, app reinstall, and phone restart. A factory reset may return settings to default, so any custom settings should be noted before proceeding.

How can I prevent this issue from happening again?

To reduce the chance of future Bluetooth connection issues:

• Keep the Projecta app updated.
• Keep your phone operating system updated.
• Check the LINbus cable during servicing or system maintenance.
• Avoid disconnecting or reconnecting system components while powered.
• Allow the system to fully reboot after updates.
• Use only the official Projecta app from the app store.

What should I do if the issue continues?

If Bluetooth still does not connect after completing all troubleshooting steps, the system may require further technical assessment.

Contact Projecta Technical Support or an authorised service provider with the following details:

• Product model.
• App version.
• Phone model and operating system.
• Description of the Bluetooth issue.
• Photos of the IQD2 display, IDC25X, and LINbus connection if possible.