Why is my HP DeskJet Plus 4155 wireless setup?

Common causes include driver issues, connectivity problems, outdated firmware, and hardware malfunctions. Follow our step-by-step guide to diagnose and fix your HP DeskJet Plus 4155.

How do I fix HP DeskJet Plus 4155 wireless setup?

Start by checking your printer connections, updating drivers, and running the built-in troubleshooting utility. Our guide below provides detailed steps for resolving HP DeskJet Plus 4155 wireless setup.

When should I call a technician for my HP DeskJet Plus 4155?

If basic troubleshooting doesn't resolve the wireless setup issue, or if you hear unusual noises, smell burning, or see error codes, it's time to contact a certified HP printer technician.

HP DeskJet Plus 4155 Wireless Setup

Setting up your HP DeskJet Plus 4155 on a wireless network should be straightforward, but many users encounter connection failures, blinking Wi-Fi lights, or the printer not being detected by the HP Smart app. This guide provides detailed HP DeskJet Plus 4155 wireless setup instructions for Windows, Mac, and mobile devices, with concrete troubleshooting steps to resolve common connectivity problems.

Preparing for Wireless Setup

Before beginning the HP DeskJet Plus 4155 wireless setup, ensure you have your Wi-Fi network name (SSID) and password ready. Your printer should be within range of your router—ideally within 10 feet during initial setup. The DeskJet Plus 4155 supports 2.4 GHz networks only; it cannot connect to 5 GHz or enterprise networks requiring browser-based authentication.

⚠️ Important: Do not use a USB cable during wireless setup unless specifically instructed by the HP Smart app. Using USB can interfere with the Wi-Fi configuration process and cause the printer to remain in setup mode indefinitely.

Step-by-Step Wireless Setup Methods

Reset Network Settings: Press and hold the Wireless button and Cancel button simultaneously for 5 seconds until the Power button blinks. This restores factory network defaults on the DeskJet Plus 4155, clearing any corrupted previous configurations that block successful setup.

Enable Wi-Fi Setup Mode: Press and hold the Wireless button for 3 seconds until the blue light blinks rapidly. This activates WPS push-button mode. Alternatively, press Wireless and Information buttons together to print a Network Configuration page, confirming the printer is ready for HP DeskJet Plus 4155 wireless setup.

Use HP Smart App for Guided Setup: Download HP Smart from 123.hp.com or your device's app store. Open the app, click "Set Up a New Printer," and follow prompts. When the app detects the DeskJet Plus 4155, select your 2.4 GHz network and enter your password exactly—HP Smart transfers credentials directly to the printer.

Manual IP Configuration (if automatic fails): Print a Network Configuration page (Wireless + Information buttons). Note the printer's MAC address. Access your router's admin panel (typically 192.168.1.1), navigate to DHCP reservations, and assign a static IP to the printer's MAC. Then in Windows, add the printer manually using this IP address via Settings > Printers & Scanners > Add Manually.

Verify Router Compatibility: Log into your router and ensure 2.4 GHz is enabled (not 5 GHz only), WPA2 or WPA3 security is active, and MAC address filtering is disabled. The DeskJet Plus 4155 cannot connect to networks with hidden SSIDs or captive portal authentication like hotel or campus Wi-Fi.

Complete Driver Installation: For Windows, download the full feature driver from HP's support site for model 4155. During installation, select "Wireless" as the connection type. For Mac running macOS 10.15 or later, AirPrint drivers install automatically once the printer is on the same network—verify in System Preferences > Printers & Scanners.

Fixing Persistent Connection Problems

If your HP DeskJet Plus 4155 wireless setup still fails after following standard procedures, several less obvious factors may be involved. Router channel congestion on 2.4 GHz (channels 1, 6, or 11 are optimal) can prevent stable pairing. Use a Wi-Fi analyzer app to check congestion, then change your router's channel in wireless settings. Additionally, ensure your firewall or antivirus software isn't blocking HP Smart—temporarily disable Windows Defender Firewall during setup as a test.

For printer repair situations where the wireless light remains solid amber, the Wi-Fi module may need service. However, first attempt a full factory reset: with the printer powered on, disconnect the power cord, wait 60 seconds, then reconnect while holding the Resume button for 20 seconds. This deeper reset often resolves firmware-related connectivity glitches.

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Frequently Asked Questions

Why does my HP DeskJet Plus 4155 keep disconnecting from Wi-Fi?

Intermittent disconnections usually stem from weak 2.4 GHz signal strength, IP address conflicts, or router sleep modes. Position your printer within 15 feet of the router, assign a static IP in your router settings, and disable any "Wi-Fi optimization" features that automatically switch devices between bands.

Can I set up the DeskJet Plus 4155 without the HP Smart app?

Yes, you can use WPS push-button method if your router supports it: press the WPS button on your router, then within 2 minutes press and hold the Wireless button on your printer for 3 seconds. However, HP Smart provides the most reliable setup experience and automatic driver installation for full functionality.

What if my computer can't find the printer after wireless setup?

First, confirm both devices are on the same 2.4 GHz network—computers on 5 GHz may not discover the printer. Run the HP Print and Scan Doctor tool (available at support.hp.com) to diagnose network visibility issues. If needed, remove and re-add the printer in your operating system's printer settings using the IP address from the Network Configuration page.