# Multiplus Inverter will not invert from 12v to 240v when off grid

**URL:** <https://community.victronenergy.com/t/multiplus-inverter-will-not-invert-from-12v-to-240v-when-off-grid/54199>\
**Category:** DIY\
**Tags:** marine, cerbo\_gx, multiplus\
**Created:** [1 March 2026 18:48 UTC](https://community.victronenergy.com/t/multiplus-inverter-will-not-invert-from-12v-to-240v-when-off-grid/54199 "2026-03-01T18:48:59Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Claire](https://avatars.discourse-cdn.com/v4/letter/c/f6c823/32.png) [@Claire](https://community.victronenergy.com/u/Claire)\
**Post date:** [1 March 2026 18:48 UTC](https://community.victronenergy.com/t/multiplus-inverter-will-not-invert-from-12v-to-240v-when-off-grid/54199/1 "2026-03-01T18:48:59Z")

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Victron Multiplus on my cruising yacht, when disconnected from shore power we can’t get the system to invert from batteries to 240v. I’m sure it’s just a setting- anyone got any idea.

Wiring is: shore power to RCD into AC in, AC out to RCD to ring main 600Ah lifpo4. Red and black from inverter connected to batteries via lynx distributer and smart shunt.

We want to pull our hair out!

System is brand new, wired less than 2 weeks ago by .9us

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**Author:** ![chrigu](https://avatars.discourse-cdn.com/v4/letter/c/ba9def/32.png) [@chrigu](https://community.victronenergy.com/u/chrigu)\
**Post date:** [1 March 2026 20:27 UTC](https://community.victronenergy.com/t/multiplus-inverter-will-not-invert-from-12v-to-240v-when-off-grid/54199/2 "2026-03-01T20:27:02Z")

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Is the rocker switch set to On instead of Charger only?

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**Author:** ![Claire](https://avatars.discourse-cdn.com/v4/letter/c/f6c823/32.png) [@Claire](https://community.victronenergy.com/u/Claire)\
**Post date:** [1 March 2026 20:50 UTC](https://community.victronenergy.com/t/multiplus-inverter-will-not-invert-from-12v-to-240v-when-off-grid/54199/3 "2026-03-01T20:50:54Z")

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I can’t turn it now as the boats an hour away but according to my photos it’s set at ii. Other options are 0 and i

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**Author:** ![chrigu](https://avatars.discourse-cdn.com/v4/letter/c/ba9def/32.png) [@chrigu](https://community.victronenergy.com/u/chrigu)\
**Post date:** [1 March 2026 20:53 UTC](https://community.victronenergy.com/t/multiplus-inverter-will-not-invert-from-12v-to-240v-when-off-grid/54199/4 "2026-03-01T20:53:17Z")

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![image](https://europe1.discourse-cdn.com/victron/original/3X/4/f/4f8069be99174032c60998cebd2087db633a4dda.png)  
 ![image](https://europe1.discourse-cdn.com/victron/original/3X/b/5/b570205d86e826c0b0b64fffa6cc87464284dfcc.png)

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<div class="post-metadata">

**Author:** ![Claire](https://avatars.discourse-cdn.com/v4/letter/c/f6c823/32.png) [@Claire](https://community.victronenergy.com/u/Claire)\
**Post date:** [1 March 2026 21:05 UTC](https://community.victronenergy.com/t/multiplus-inverter-will-not-invert-from-12v-to-240v-when-off-grid/54199/5 "2026-03-01T21:05:33Z")

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I think this is my problem! We got the remote switch so thought we wouldn’t have this problem. Thanks so much for your time

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<div class="post-metadata">

**Author:** ![chrigu](https://avatars.discourse-cdn.com/v4/letter/c/ba9def/32.png) [@chrigu](https://community.victronenergy.com/u/chrigu)\
**Post date:** [1 March 2026 21:15 UTC](https://community.victronenergy.com/t/multiplus-inverter-will-not-invert-from-12v-to-240v-when-off-grid/54199/6 "2026-03-01T21:15:43Z")

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Hm, in that case im not sure then. The only time i wanted to use a remote switch i found it didnt work as i wanted since i also had a cerbo in the system, so i never bothered with it. But its worth a try to see if the remote switch still works if the main switch is in position 1