# 24v/3000 Pheonix inverter Green led blinks when RJ45 plugged in **URL:** \ **Category:** Q&A and troubleshooting\ **Tags:** inverter\_rs, victron\_community, cerbo\_gx, vrm, diy\ **Created:** [17 January 2025 18:49 UTC](https://community.victronenergy.com/t/24v-3000-pheonix-inverter-green-led-blinks-when-rj45-plugged-in/19021 "2025-01-17T18:49:38Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![harleythatcher](https://avatars.discourse-cdn.com/v4/letter/h/b2d939/32.png) [@harleythatcher](https://community.victronenergy.com/u/harleythatcher)\ **Post date:** [17 January 2025 18:49 UTC](https://community.victronenergy.com/t/24v-3000-pheonix-inverter-green-led-blinks-when-rj45-plugged-in/19021/1 "2025-01-17T18:49:38Z")
I just swapped out a Victron 24/1200va inverter for a 24/3000 Pheonix inverter. All was fine with the smaller inverter however now when I plug the rj45 cable into the inverter the green led starts to blink and AC out stops. I am using a raspberry pi 3b. Once the led starts to blink I have to cycle power to the inverter to get things back to normal. I wired up my Cerbo Gx that was replaced by the Raspberry Pi and got the same results. Tried two different cables same result. After googling for a bit I think it may be a problem with the inverters software version not being compatible with some other unit on the lineup. I just purchased the inverter but can’t update the software without getting the comm cable to work. Any ideas? As it is it’s working. I am using it to power my fridge and freezer (NW Florida, Hurricanes). But it would be nice to be able to see my load like it was with the smaller inverter. Problem solved. 100% operator error. The RJ45 would not work on the laptop because you need a special 60.00 adapter. It didn’t work with the Raspberry PI probably for the same reason. It didn’t speak it’s language. And it didn’t work on the Cerbo GX because some goob plugged the cable into the ethernet port not the RJ45 port. lol That goob would be me of course. I want to give a shout out to Nick over at Inverters R Us. Thats where I purchase all of my victron products. Nick is the tech there and was very helpful in figuring out this riddle. Thanks Nick. And a thanks you to all that stopped by and provided assistance. ---
**Author:** ![M\_Lange](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/m_lange/32/16_2.png) [@M\_Lange](https://community.victronenergy.com/u/M_Lange)\ **Post date:** [17 January 2025 19:10 UTC](https://community.victronenergy.com/t/24v-3000-pheonix-inverter-green-led-blinks-when-rj45-plugged-in/19021/2 "2025-01-17T19:10:40Z")
Make a picture of the main control PCB. ---
**Author:** ![harleythatcher](https://avatars.discourse-cdn.com/v4/letter/h/b2d939/32.png) [@harleythatcher](https://community.victronenergy.com/u/harleythatcher)\ **Post date:** [17 January 2025 19:45 UTC](https://community.victronenergy.com/t/24v-3000-pheonix-inverter-green-led-blinks-when-rj45-plugged-in/19021/3 "2025-01-17T19:45:07Z")
![20250117_132711](https://europe1.discourse-cdn.com/victron/original/2X/9/9dfff3ff6bee5e45aec7d60d3881985f4ece303a.jpeg) ![20250117_132632](https://europe1.discourse-cdn.com/victron/original/2X/7/778d4d770973d7058e202ff2708484b29b08f015.jpeg) I just used my laptop with Victron connect and same problem when I plug the rj45 into the lalptop green led starts to blink. I tried both rj45 sockets on the inverter. ---
**Author:** ![Netrange](https://avatars.discourse-cdn.com/v4/letter/n/7ab992/32.png) [@Netrange](https://community.victronenergy.com/u/Netrange)\ **Post date:** [17 January 2025 22:09 UTC](https://community.victronenergy.com/t/24v-3000-pheonix-inverter-green-led-blinks-when-rj45-plugged-in/19021/4 "2025-01-17T22:09:11Z")
7.2.2 VE.Bus error codes If a VE.Bus error occurs (example: a broken UTP cable) the **system will switch off** and the ‘ **inverter on’ LED will flash**. If such an error occurs one should switch all units off, verify all cabling and switch the units on again. ---
**Author:** ![harleythatcher](https://avatars.discourse-cdn.com/v4/letter/h/b2d939/32.png) [@harleythatcher](https://community.victronenergy.com/u/harleythatcher)\ **Post date:** [17 January 2025 22:37 UTC](https://community.victronenergy.com/t/24v-3000-pheonix-inverter-green-led-blinks-when-rj45-plugged-in/19021/5 "2025-01-17T22:37:11Z")
Yes thank you. I have been using a regular rj45 cable so I ordered a Victron UTP cable from Amazon. From what I have read premade cheap cables have a history of presenting problems so hopefully this will fix the issue. I appreciate your help. ---
**Author:** ![Netrange](https://avatars.discourse-cdn.com/v4/letter/n/7ab992/32.png) [@Netrange](https://community.victronenergy.com/u/Netrange)\ **Post date:** [17 January 2025 22:40 UTC](https://community.victronenergy.com/t/24v-3000-pheonix-inverter-green-led-blinks-when-rj45-plugged-in/19021/6 "2025-01-17T22:40:37Z")
You could also check your RJ45 Sockets for broken or damaged Pins … I’m curious what the new cable will bring … Maybe the old cable was a crossover with twisted pins … we’ll see 😉 ---
**Author:** ![harleythatcher](https://avatars.discourse-cdn.com/v4/letter/h/b2d939/32.png) [@harleythatcher](https://community.victronenergy.com/u/harleythatcher)\ **Post date:** [19 January 2025 18:52 UTC](https://community.victronenergy.com/t/24v-3000-pheonix-inverter-green-led-blinks-when-rj45-plugged-in/19021/7 "2025-01-19T18:52:39Z")
Just tried the Victron Cable, same problem. I’ll call tomorrow and talk to a tech and see if anything can be determined. I agree about the actual sockets. I think I may be farther ahead just pulling the main PCB and checking the solder joints and pins of the two sockets. Three cables, a R pi 3, a cerbo gx, my laptop all causing the inverter to go into error. The only common point is the sockets so it’s either a software/settings issue or bad contacts. I will post what I find out regardless. ---
**Author:** ![harleythatcher](https://avatars.discourse-cdn.com/v4/letter/h/b2d939/32.png) [@harleythatcher](https://community.victronenergy.com/u/harleythatcher)\ **Post date:** [20 January 2025 22:24 UTC](https://community.victronenergy.com/t/24v-3000-pheonix-inverter-green-led-blinks-when-rj45-plugged-in/19021/8 "2025-01-20T22:24:56Z")
Problem resolved see original post above for details. ---
**Author:** ![system](https://europe1.discourse-cdn.com/victron/original/1X/21a9a7b5db7c6339715f993568736a7053199995.png) [@system](https://community.victronenergy.com/u/system)\ **Post date:** [3 February 2025 22:25 UTC](https://community.victronenergy.com/t/24v-3000-pheonix-inverter-green-led-blinks-when-rj45-plugged-in/19021/9 "2025-02-03T22:25:10Z")
Closed on 3 February 2025 22:25 UTC This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.