Auxiliary heating error freezes control unit

Indio2023 · Nov 4, 2026

Ok had a look at another thread but didn’t seem to be the answer
2023 T6.1 ocean
We are currently away camping and have been using the heater on and off . Today turned it on and it stopped after about 10 minutes and then the remote button wouldn’t turn off the heater icon on the control unit . Heater control then showed auxiliary heater error . At which point I couldn’t then use the dial to get back to main menu . AI suggested taking out the 5A fuse wait 60 seconds and refit it . This seems to have enabled me to get back to the main menu and access things like putting pop top down ! Anyway heater still not working and when I tried again it froze again so did the same fuse trick .
Fuel is over half a tank
Battery shows ok on main panel
Here are a couple of photos any idea what else it could ??

Indio2023 · Nov 4, 2026

Forgot to say heater vent not obstructed

Soton Campers · Nov 4, 2026

Take it for a drive. This resets the heat immediately function.

Indio2023 · Nov 4, 2026

Soton Campers said:
Take it for a drive. This resets the heat immediately function.

Ok we leave tomorrow so I see if that clears it

Indio2023 · Friday at 3:23 PM

Can confirm that the heater is now working after I drove the van home from the campsite . I’ve changed to heat continuously at level 7 for now and will rely on the key to turn on and off . Assume like you say the heater somehow resets when driven but unsure of the exact reason or how it does it !

sidepod · Friday at 6:55 PM

Why would you use Heat Immediately?

Indio2023 · Friday at 7:09 PM

sidepod said:
Why would you use Heat Immediately?

No idea I’ve only just started using the heater as only had van a month so it just happened to be on that setting . Is it best to keep on the continuous setting ?

sidepod · Friday at 9:43 PM

It’s a long story but yes. Heat continuously is meant for the air heater in the living space whereas heat immediately is for the engine coolant heater which, if it’s a UK van won’t run unless the engine is running.
Both will work but the latter has a runtime limit of 120 mins, once exceeded the van needs to be driven. The longer version of this explains why.

Just set the display to Continually and all will be good.

Indio2023 · Sunday at 9:40 PM

sidepod said:
It’s a long story but yes. Heat continuously is meant for the air heater in the living space whereas heat immediately is for the engine coolant heater which, if it’s a UK van won’t run unless the engine is running.
Both will work but the latter has a runtime limit of 120 mins, once exceeded the van needs to be driven. The longer version of this explains why.

Just set the display to Continually and all will be good.

That’s great thanks for that I didn’t realise and totally explains why it stopped and needed to be driven