# Blown fuse alarm

**URL:** <https://community.victronenergy.com/t/blown-fuse-alarm/37821>\
**Category:** DIY\
**Tags:** lynx\_bms, beginner, marine\
**Created:** [30 June 2025 18:38 UTC](https://community.victronenergy.com/t/blown-fuse-alarm/37821 "2025-06-30T18:38:11Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![Kokomo](https://avatars.discourse-cdn.com/v4/letter/k/f17d59/32.png) [@Kokomo](https://community.victronenergy.com/u/Kokomo)\
**Post date:** [30 June 2025 18:38 UTC](https://community.victronenergy.com/t/blown-fuse-alarm/37821/1 "2025-06-30T18:38:11Z")

</div>

We have been out on the boat for 1 month. Yesterday on a long run, I received this error: “Battery Monitor - Lynx Smart BMS HQ2443G94VC [0], Distributor A Fuse 2 Blown: Alarm”. 2 minutes later, it cleared. It did this 8 times, with varying lengths of time before it resolved.

I did not lose power while the alarm was active.

I’m on firmware 3.55.

 ![image](https://europe1.discourse-cdn.com/victron/original/3X/b/5/b5ec224377508cd824e3f49bf641b191a35c9f9d.png)

---

<div class="post-metadata">

**Author:** ![OGPS](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/ogps/32/4120_2.png) [@OGPS](https://community.victronenergy.com/u/OGPS)\
**Post date:** [30 June 2025 20:12 UTC](https://community.victronenergy.com/t/blown-fuse-alarm/37821/2 "2025-06-30T20:12:05Z")

</div>

I have seen this on 48V systems pulling high currents. There was a tech bulletin on this a couple of years ago. Please provide some more details on your system and the load connected to Fuse 2.

---

<div class="post-metadata">

**Author:** ![Kokomo](https://avatars.discourse-cdn.com/v4/letter/k/f17d59/32.png) [@Kokomo](https://community.victronenergy.com/u/Kokomo)\
**Post date:** [3 July 2025 13:10 UTC](https://community.victronenergy.com/t/blown-fuse-alarm/37821/3 "2025-07-03T13:10:33Z")

</div>

It turns out that the nut on this fuse was loose. Tightened it and the alarm is gone.

---

<div class="post-metadata">

**Author:** ![OGPS](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/ogps/32/4120_2.png) [@OGPS](https://community.victronenergy.com/u/OGPS)\
**Post date:** [3 July 2025 14:10 UTC](https://community.victronenergy.com/t/blown-fuse-alarm/37821/4 "2025-07-03T14:10:50Z")

</div>

Occam’s Razor rides again 🙂