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Sunmi printer troubleshooting

If your Sunmi printer was set up using the main guide but receipts or kitchen tickets still do not print, work through the steps below in order. Most issues come down to network connectivity, Chrome permission for the printer IP, or FireMenu Print Server fields in FireMenu.

For the full first-time setup, see Printer connection.

Step 1: Check the basics

  1. Power the printer off and on again.
  2. Check the router: cable in an active port, venue internet healthy if the printer uses DHCP.
  3. Check the printer:
    • the blue network indicator should be on;
    • double-press the button on the back and confirm on the status slip that the printer has an IP address;
    • if there is no IP on the slip, repeat network setup from Printer connection (Ethernet and status slip steps).
Sunmi printer: blue network indicator on the front panel

Step 2: Check Chrome

If the printer is definitely on the network and you know the IP:

  1. Open Chrome on the POS device.
  2. Confirm the printer IP is listed under “Insecure origins treated as secure” (chrome://flags): each entry must use http:// plus the IP (for example http://192.168.1.100). Separate multiple entries with commas.
  3. Set the flag to Enabled, click Relaunch, then fully quit Chrome after it restarts.

More detail in Printer connection, step 3.

Chrome: Insecure origins treated as secure, http:// IP field, Enabled and Relaunch

Step 3: Check FireMenu

  1. Open FireMenu.
  2. Go to Settings → Print tab.
  3. If FireMenu Print Server is selected, open the printer in the list and verify:
    • Type — Ethernet;
    • IP address — matches the current status slip.
  4. Save changes and run a test print from the POS (or wherever you expect the ticket).
FireMenu: Print tab, FireMenu Print Server, Ethernet type, IP and print targets

Step 4: Optional static IP

If the status slip IP keeps changing (DHCP assigns a new address), assigning a static IP on the printer avoids updating Chrome and FireMenu after every change.

Printer web UI: Ethernet page with DHCP values and static IP and netmask fields
  1. Print a status slip (double-press the rear button).
  2. In a browser on your device, enter the printer’s current IP in the address bar.
  3. Open the printer’s web configuration:
    • click Log in (default password is often empty—leave the password field blank).
  4. Open the Ethernet section.
  5. In “IP Address (Static)”, use the same subnet as “IP Address (DHCP)” but set the last octet to a value between 150 and 250 (for example if DHCP gave 192.168.1.100, you might use 192.168.1.200). Save.
  6. In “Netmask (Static)”, enter the same value as “Netmask (DHCP)”.
  7. Click Save, then power-cycle the printer.
  8. Print a new status slip and update Chrome and FireMenu ( Print tab) with the new static IP, following the same rules as in Printer connection.

Still not working?

If printing still fails after these steps, contact FireMenu support with the printer model, the IP from the latest status slip, and a short note (what does not print: POS, kitchen, cash drawer, and so on).