Engine on, frig on turn off engine, turn off frig volt on house battery is 12 [engine battery 12.2]

On Aug 25, 2014, at 9:27 AM, Vanagon wrote:

> Okay, now with 13V on both batteries and the reefer on, turn off the engine and also the reefer and see what the voltage is on the house battery. 
> 
> The turn on the reefer and measure the voltage on the house battery. 
> 
> Sent from camp. 
> 
>> On Aug 25, 2014, at 9:19 AM, Mike Miller <mwmiller6@ATT.NET> wrote:
>> 
>> Still see 13 + volts so I'm not sure the electrics are hooked up correctly. The frig light is lit though. Maybe it just takes longer than 3 hrs to cool the thing but the fins inside were only slightly cool and that could have been the result of the cold water bottles I loaded it with.
>> 
>> Mike
>> 
>> 
>>> On Aug 25, 2014, at 7:29 AM, Vanagon wrote:
>>> 
>>> What do you see for a voltage on the house battery with the engine running and the reefer turned on and set to the 12vdc mode?
>>> 
>>> Sent from over my first cup of coffee. 
>>> 
>>>> On Aug 24, 2014, at 10:36 PM, Mike Miller <mwmiller6@ATT.NET> wrote:
>>>> 
>>>> Vanites,
>>>> 
>>>> Went camping for a week in my 87 Westfakia Syncro TDI. Put the frig on battery for the drive up hoping to get a air flow current started.
>>>> 
>>>> It didn't seem cold when I got there but it did light right off on propane, which normally doesn't happen.
>>>> 
>>>> And my coach battery was almost drained.
>>>> 
>>>> When I measured the voltage at the house batter it was 11.4 or so and the engine battery was 12.5 or so, with the engine off.
>>>> 
>>>> With the engine running the house battery voltage was 13.1 or 2 and the engine battery 13.7 or so, regardless of rpm.
>>>> 
>>>> Bad battery?
>>>> 
>>>> Bad charging relay?
>>>> 
>>>> Bad juju?
>>>> 
>>>> Mike
>>