Interior heater doesn't work unless on hook-up

[ejmoore]

With the cold weather coming I would like to get this sorted out.
Our interior heater only works when we have a hook-up (which I would prefer not to bother with / pay for). With the hook-up it works fine - starts blowing, heats up, all ok.
Without the hook-up, it starts blowing, but only cold air, and it switches itself off after a couple of minutes.
This is with plenty of fuel and a good charge on the leisure battery.

Any thoughts? The van is a 2008 T5.

 

[Hotel California]

Are you sure the lesure bats are still good enough...are they still the original?
If so from 2008 they are over theire best....

 

[ejmoore]

I had a new leisure battery fitted a couple of years ago to try and sort this out, but it's still happening.

 

[Bigted]

Earth bond?

 

[ejmoore]

Someone will have to explain that for me

 

[yanathem]

Probably needs an earth shunt repair. Dead easy to do. There Is a 'how to guide' in the download section. Very common on the older California's.
Do your interior lights flicker when you run the heater on 12v?

 

[GrannyJen]

Earth shunt was one of the bits they replaced on mine ...

 

[Victor]

Sure sound like Earth shunt
https://vwcaliforniaclub.com/threads/earth-shunt-repair.8974/

 

[ejmoore]

Probably needs an earth shunt repair. Dead easy to do. There Is a 'how to guide' in the download section. Very common on the older California's.
Do your interior lights flicker when you run the heater on 12v?

Yes, they do. I'll have a look at the download section. Thank you.

 

[jts46]

Someone will have to explain that for me

See my write up in the download section

 

[ejmoore]

Thanks John, I'll look it up.