# Multiplus II in conflict with camping switch + noise **URL:** \ **Category:** DIY\ **Tags:** multiplus-ii\ **Created:** [18 April 2026 06:58 UTC](https://community.victronenergy.com/t/multiplus-ii-in-conflict-with-camping-switch-noise/56663 "2026-04-18T06:58:28Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![Lapdi](https://avatars.discourse-cdn.com/v4/letter/l/ecb155/32.png) [@Lapdi](https://community.victronenergy.com/u/Lapdi)\ **Post date:** [18 April 2026 06:58 UTC](https://community.victronenergy.com/t/multiplus-ii-in-conflict-with-camping-switch-noise/56663/1 "2026-04-18T06:58:28Z")
Hi All, I’m setting up a new 230 plant, in order to avoid unintentional camping switch trip, if the Multiplus is on. I have just few questions: - According to my scheme, where would you suggest to connect the 230v that feeds the Multiplus? - In order to use the Multiplus just like an AC-DC, how to switch it on (1 or 2)? - While in bulk mode, does the Multiplus feeds the 230 V? - I have to pass the TÜV inspection, on next June and I have to draw an acceptable scheme: do you know a free software for drawing? Thanks a lot, Best energy ☺ ![IMG_0833](https://europe1.discourse-cdn.com/victron/original/3X/3/9/3943774da405501de842d97bfdbd832f2abd859f.jpeg) ---
**Author:** ![lxonline](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/lxonline/32/25567_2.png) [@lxonline](https://community.victronenergy.com/u/lxonline)\ **Post date:** [18 April 2026 07:37 UTC](https://community.victronenergy.com/t/multiplus-ii-in-conflict-with-camping-switch-noise/56663/2 "2026-04-18T07:37:42Z")
> [@Free System Wiring Diagram Software?](https://community.victronenergy.com/t/free-system-wiring-diagram-software/43553): > > (Edited after initial posting for clarification) Silly question here. What software are people using to generate the high-quality drawings and diagrams of their power systems like the one below? Is there anything free out there that doesn’t have a near vertical learning curve? Where are the device images/icons coming from? I’d like to create something that doesn’t look like a 4-year old got a new box of crayons. Documentation is important for keeping a system running, troubleshooting, and … Couple of suggestions here and a few other threads for drawings. > [@Lapdi](#): > > In order to use the Multiplus just like an AC-DC, how to switch it on (1 or 2)? There are 3 positions, on, off and charger only (passthrough). 2 would be charger only so would allow passthrough. > [@Lapdi](#): > > - While in bulk mode, does the Multiplus feeds the 230 V? Yes if the input current programmed allows it to. Put all your loads on the inverter. It has 2 outputs, that way you can current control the shore input to all the loads through the inverter. There are two outputs, one for priority loads and the second can be programmed to disconnect. In its base state it automatically switches off when shore/grid disconnects. Look up power assist and power control on you tube about that feature ---
**Author:** ![Karl-Heinz](https://avatars.discourse-cdn.com/v4/letter/k/ad7895/32.png) [@Karl-Heinz](https://community.victronenergy.com/u/Karl-Heinz)\ **Post date:** [18 April 2026 09:13 UTC](https://community.victronenergy.com/t/multiplus-ii-in-conflict-with-camping-switch-noise/56663/3 "2026-04-18T09:13:50Z")
What is your current location? ---
**Author:** ![Lapdi](https://avatars.discourse-cdn.com/v4/letter/l/ecb155/32.png) [@Lapdi](https://community.victronenergy.com/u/Lapdi)\ **Post date:** [19 April 2026 19:21 UTC](https://community.victronenergy.com/t/multiplus-ii-in-conflict-with-camping-switch-noise/56663/5 "2026-04-19T19:21:50Z")
Hi, There are some mandatory points: - the Multiplus II is very noisy overnight, even in OFF and it must be de-energized completely; - If the Multiplus output and the camping line insist on the same line, simultaneously, the camping switch trip immeditely; this must be avoided; So, according tpo these points I’mm reviewing the scheme. Please let me know. BR. ---
**Author:** ![Lapdi](https://avatars.discourse-cdn.com/v4/letter/l/ecb155/32.png) [@Lapdi](https://community.victronenergy.com/u/Lapdi)\ **Post date:** [19 April 2026 19:22 UTC](https://community.victronenergy.com/t/multiplus-ii-in-conflict-with-camping-switch-noise/56663/6 "2026-04-19T19:22:30Z")
Italy ---
**Author:** ![lxonline](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/lxonline/32/25567_2.png) [@lxonline](https://community.victronenergy.com/u/lxonline)\ **Post date:** [19 April 2026 19:49 UTC](https://community.victronenergy.com/t/multiplus-ii-in-conflict-with-camping-switch-noise/56663/7 "2026-04-19T19:49:48Z")
> [@Lapdi](#): > > noisy overnight, even in OFF Odd. I haven’t experienced any noise when the unit is switched off. Are you sure the switch position is correct? What size inverter is it? What kind of noises are you hearing? I guess having all the loads on the output makes no sense if you are planning on switching it off then since now the assumption is that you aren’t using 230v at night. > [@Lapdi](#): > > must be de-energized completely; Does this mean you are also disconnecting the battery at night? ---
**Author:** ![nickdb](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/nickdb/32/51440_2.png) [@nickdb](https://community.victronenergy.com/u/nickdb)\ **Post date:** [19 April 2026 21:20 UTC](https://community.victronenergy.com/t/multiplus-ii-in-conflict-with-camping-switch-noise/56663/8 "2026-04-19T21:20:15Z")
There is a fan assistant that can be used to reduce the noise, it will derate the system though. ---
**Author:** ![Lapdi](https://avatars.discourse-cdn.com/v4/letter/l/ecb155/32.png) [@Lapdi](https://community.victronenergy.com/u/Lapdi)\ **Post date:** [20 April 2026 05:09 UTC](https://community.victronenergy.com/t/multiplus-ii-in-conflict-with-camping-switch-noise/56663/9 "2026-04-20T05:09:25Z")
Nothing strange: every transformer, with the primary under voltage is noisy; nothing to do with the CC side. But this is a simple problem to solve, I open the switch 😅. The main question is: how can I connect the inverter 230 output in order to avoid conflict with shore 230v? Ciao. ---
**Author:** ![lxonline](https://dub1.discourse-cdn.com/victron/user_avatar/community.victronenergy.com/lxonline/32/25567_2.png) [@lxonline](https://community.victronenergy.com/u/lxonline)\ **Post date:** [20 April 2026 05:27 UTC](https://community.victronenergy.com/t/multiplus-ii-in-conflict-with-camping-switch-noise/56663/10 "2026-04-20T05:27:52Z")
Ok so you have not based your conclusion on actual experience? Off is off on a Multiplus, i have never heard transformer noises when the switch is in the off position. If transformer noise is a problem have you considered looking into the Multi RS series - no big transformer there. The only way to avoid the overload is to be a conscious user. In any case it sounds like you will have the inverter off. So it would have to be a deliberate effort to switch it on then the use will know what they are doing and switch off the other load on the shore. > [@Lapdi](#): > > The main question is: how can I connect the inverter 230 output in order to avoid conflict with shore 230v? Use a changeover switch so that only one at a time can have a direct connection to the shore power. ---
**Author:** ![Lapdi](https://avatars.discourse-cdn.com/v4/letter/l/ecb155/32.png) [@Lapdi](https://community.victronenergy.com/u/Lapdi)\ **Post date:** [21 April 2026 07:22 UTC](https://community.victronenergy.com/t/multiplus-ii-in-conflict-with-camping-switch-noise/56663/11 "2026-04-21T07:22:58Z")
I have now this Multiplus II and I can not waste it just for the noise, I would find a solution 🙂 For me is not a problem switch off the inverter, I just want set up a system that is mistake proof, avoiding conflicts between 230V shore and 230V multiplus (when on). I´m going to attache a new sketch… ---
**Author:** ![Lapdi](https://avatars.discourse-cdn.com/v4/letter/l/ecb155/32.png) [@Lapdi](https://community.victronenergy.com/u/Lapdi)\ **Post date:** [21 April 2026 09:29 UTC](https://community.victronenergy.com/t/multiplus-ii-in-conflict-with-camping-switch-noise/56663/12 "2026-04-21T09:29:07Z")
![WhatsApp Image 2026-04-21 at 09.50.49](https://europe1.discourse-cdn.com/victron/original/3X/6/1/618e986c06242e1e9538e77bd1f5629e543f65c7.jpeg)