Uh, did you check the fridge fuse?  If you are getting 13 volts at both
batteries with engine running then even with a bad house battery the fridge
should cool because it's running off the alternator.  If the fuse is good
it's possible that the heater in the fridge is bad.

Stuart

> On Aug 25, 2014, at 2:04 PM, Mike Miller <mwmiller6@ATT.NET> wrote:
>
> 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
>