COMM-404RP4T Plus

Honeywell RP4T Plus Error COMM-404: Connection Fix

The COMM-404 error on the Honeywell RP4T Plus signals a communication loss between the printer and the host device (mobile terminal, tablet, or PC). This usually occurs due to Bluetooth signal interruption or incorrect IP network settings. The solution involves resetting the network parameters and re-pairing the device.

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Common causes

  • 1Radiofrequency (RF) interference in high-traffic wireless environments.
  • 2Security certificate mismatches in WPA2/WPA3 enterprise Wi-Fi networks.
  • 3IP address conflict or dynamic IP changes on a static-assigned printer.
  • 4Outdated printer drivers on the host Windows or Android system.

Solutions

Diagnóstico rápido

COMM-404 is identified when the printer is powered on but fails to receive print commands. If the status LED indicates a lack of network activity or Bluetooth status, the logical handshake has been broken.

Solución paso a paso

  1. Power cycle both devices: Restart both the printer and the host device.
  2. Check connection mode: Ensure the printer is set to the correct interface (Bluetooth or Wi-Fi) in the settings menu.
  3. Unpair the device: Remove the printer from the mobile/PC device Bluetooth list and re-run the discovery process.
  4. Reset network settings: If on Wi-Fi, verify the IP address matches your network's subnet.

Prevención y mantenimiento

Keep printer firmware updated to ensure compatibility with modern OS Bluetooth protocols. Keep the device within a 5-meter range of the host to ensure signal strength during critical tasks.

Cuándo llamar a un técnico

If the interface settings fail to save or the network card is not detected at all, the printer's communication module may have a hardware failure. Contact technical support for an inspection.

Ficha técnica del equipo

  • Technology: Mobile thermal printer
  • Connectivity: Bluetooth (Class 2), Wi-Fi 802.11 b/g, USB 2.0
  • Compatibility: Supports Honeywell Fingerprint and Direct Protocol
  • Compatible Consumables: RP-series thermal labels (4-inch width)
  • Recommended Use: Mobile inventory, warehouse receipt printing
  • Drivers / official firmware

Steps to follow

  1. 1

    Communication Reset

    Power off and on the printer to force a network card restart.

  2. 2

    Re-pairing

    Forget the device in your phone/PC settings and initiate a fresh Bluetooth pair.

  3. 3

    Network Verification

    Ensure the printer and host are on the same local subnet for Wi-Fi configurations.

  4. 4

    Connection Test

    Use the Honeywell configuration utility to send a test print command.

Frequently asked questions

The error means the hardware is functional but the connection channel is dead. Re-pairing is usually required.

It is critical for daily operations; without a communication link, the device is essentially offline for any printing tasks.

Use standard 4-inch Honeywell thermal labels to verify that both communication and paper feed are functional.

Ensure a stable connection environment and avoid large distances between the printer and the host.

Honeywell RP4T Plus Error COMM-404: Connection Fix | Vimazdev