Eolo Easy modem solid red Internet LED: Diagnosis and Solutions

SAFETY WARNING: Before disconnecting, reconnecting, or handling network cables and power supplies (modem and PoE injector), ensure your hands are completely dry. Never attempt to disassemble or open power supplies or the router: they are sealed and contain no user-serviceable parts inside. If you suspect a fault with the external antenna or the cable on the roof, do not intervene yourself to avoid the risk of falls or electrocution; always rely on a qualified antenna technician. ReeFix provides this diagnosis exclusively for educational and informational purposes.

IF the LED on the PoE injector (the one that powers the external antenna) is off or not present

Key signals: The Eolo modem's "Internet" LED (provided with the Eolo Easy offer, usually an EOLOrouter or EOLOrouterEVO) is solid red, but the PoE injector (the small power supply with two Ethernet ports, one "PoE" and one "LAN") shows no light and is off. This is the most frequent cause of service disruption.

THEN: The probability that the external antenna (CPE) is not receiving power is High (45-55%). Without electrical power, the antenna cannot function and sends no signal to the modem. The router, not detecting the connection on the WAN port, signals the anomaly with a solid red "Internet" LED.

Quick checks (you can do these yourself):

1. PoE injector power check: Ensure the PoE injector is firmly plugged into a working electrical outlet. Try connecting it to another wall outlet to rule out faults in your home's wiring.
2. Ethernet cable verification: Check that the two network cables are correctly inserted into the PoE injector ports:
   • The cable going up to the roof (connected to the antenna) must enter the port labeled "PoE".
   • The cable going to the Eolo modem must enter the port labeled "LAN".
   • Common mistake: Swapping these two cables prevents power to the antenna and risks damaging the router's WAN port.
3. Power cycle: Disconnect the modem's power supply and the PoE injector from power for about 30 seconds, then reconnect them, starting with the PoE injector.

Costs and Decision:

• Self-resolution: If the problem was simply a disconnected or swapped cable, the resolution is immediate and free of charge.
• Hardware replacement: If the PoE injector remains off after checks, it is likely burnt out. A 24V Gigabit PoE Power Supply replacement costs about 25-60€. If, however, the fault concerns the antenna on the roof (e.g., due to lightning), an authorized Eolo technician will be required, with an average cost of 80-150€.

IF the LED on the PoE injector is on (solid green/blue) AND/OR the Eolo modem shows a physical signal on the WAN port (green/yellow LED active)

Key signals: The PoE injector is regularly on, the Eolo modem shows a solid red "Internet" LED, but the physical LEDs on the WAN port (where the cable from the injector connects) are flashing or active, indicating that the basic electrical connection is present.

THEN: The causes can be various and should be analyzed based on their probability:

1. Damage or water infiltration in the outdoor Ethernet cable (25%)

   • Why: The network cable going up to the antenna is exposed to sun, rain, and wind. Micro-fractures in the sheath or water infiltration in the RJ45 connectors can cause intermittent contacts or short circuits, interrupting data transmission even if power seems active. The problem often occurs after heavy thunderstorms.
   • Technical verification: A qualified technician will use an RJ45 network cable tester to check the integrity of individual conductors and cable insulation.
   • Costs: Purchasing an Outdoor Cat6 Ethernet Cable costs 20-50€, plus the technician's labor (80-150€) for installation and cabling on the roof.

2. Logical service disruption on the Eolo network or incorrect PPPoE credentials (20%)

   • Why: The physical connection between modem and antenna is active, but the router cannot authenticate with Eolo servers. This can depend on a temporary fault at the BTS (the local radio base station), a configuration issue, or an administrative suspension of the line.
   • Quick checks:
     • Contact Eolo customer support to check if there are widespread faults in your area.
     • Perform a simple power cycle of the modem. Avoid pressing the "Reset" button on the back of the router unless specifically requested by the operator, to avoid deleting the configuration parameters necessary for the connection.
   • Costs: No cost if the problem is related to the operator's network or can be resolved remotely.

3. Faulty modem WAN port or degraded power supply (10%)

   • Why: The modem's WAN port may have been damaged due to a power surge. In other cases, a worn router power supply no longer provides the correct voltage, causing instability in the network chips.
   • Quick checks:
     • Try replacing the modem's power supply with a compatible one that meets the electrical specifications (usually 12V and at least 2A). A generic 12V 2A power supply costs about 15-30€.
     • Technical diagnosis: A technician would check the router's internal logs for PPPoE negotiation errors (such as "LCP Terminated") and measure the actual stability of the power supply with a digital multimeter.
   • Costs: From 15 to 30€ for the power supply; if the modem is faulty, replacement with a compatible model or one provided by Eolo varies between 50 and 100€.

CONCLUSION

To solve the problem in less than a minute, follow this order of probability:

1. First check (45-55% probability): Inspect the PoE injector. If it's off or the cables are swapped, correct the connection. If it remains off after changing outlets, the injector is faulty (replacement cost 25-60€) or the antenna has suffered electrical damage (requires Eolo assistance).
2. Second check (25% probability): If the injector is on but the Internet LED remains red, especially after a heavy thunderstorm or strong wind, the problem is likely a damaged external cable. This requires a technician's intervention to replace the Outdoor Cat6 Ethernet Cable (total cost approximately 100-200€ for cable and labor).
3. Third check (20% probability): If the physical connections are intact, contact Eolo support to rule out line faults or authentication issues that can be resolved remotely.
4. Fourth check (10% probability): If everything else is in order, try replacing the modem's 12V 2A power supply (15-30€). If the problem persists, the modem itself may be faulty and will need to be replaced (50-100€).

Operational decision: If the PoE injector is off and does not reactivate after basic checks, proceed with its replacement or contact Eolo. If the injector is on but the connection does not establish, contact support to check the line status before requesting a technical intervention on the external cable.