[C320-list] Refrigeration Diagnostics Assistance

[Bob Borelli]

Try a test lamp, trace the DC positive wire from the rocker switch.
First test for DC positive current on either side of rocker with the test lamp.

The 15 amp fuse and the rocker are on the DC positve conductor.
The ground conductors do not have fuse or switch in the DC negative circuit.

Stick the point of the test lamp into both sides top of fuse.
Light indicates power to the fuse and to the motor.
If light / power both sides, check for corrosion on terminals.
If can't stick points into fuse, stick into the conductor (wire) then tape over penetration.

13.5 volts on a resting battery?  No, were you charging the batteries?
Surface voltage on a fully charged over a couple of hours ago would not read over 12.9 volts DC.
If your digital multi-meter is reading 13.5V DC could be something wrong with batteries?

Bob Borell  1995 C320  no. 209

________________________________
From: C320-list <c320-list-bounces at lists.catalina320.com> on behalf of Ken McCrimmon <kenmccrimmon at hotmail.com>
Sent: Friday, June 25, 2021 6:32 PM
To: C320-List at catalina320.com <C320-List at catalina320.com>
Subject: Re: [C320-list] Refrigeration Diagnostics Assistance

I switched the positive leads for the fridge and the vhf radio.  The radio work but the fridge still does not. I think we have elminated the rocker switch.

Thanks for that suggestion

Sent from my iPhone

> On Jun 25, 2021, at 6:23 PM, Christian <ccaper at gmail.com> wrote:
>
> I'm not sure about the negative lead, on my console panel (1994, #138), I
> only have positive leads running to each rocker switch, but my fridge
> rocker switch had gone bad, which is why I'd suggest temp moving it to
> another rocker switch of similar amp capacity, or checking if you are
> getting current at your compressor, whichever is easier for you.
>
>> On Fri, Jun 25, 2021 at 5:14 PM Ken McCrimmon <kenmccrimmon at hotmail.com>
>> wrote:
>>
>> Where would I check the negative lead going back to the panel
>>
>> Sent from my iPhone
>>
>>>> On Jun 25, 2021, at 6:09 PM, Christian <ccaper at gmail.com> wrote:
>>>
>>> For sanity, you might try opening your control panel, and temp moving
>> the
>>> positive wire on your fridge rocker switch to a different rocker switch
>>> that handles similar amp load.  Only reason I mention this is when I
>>> acquired my 320 5 years ago, the previous owner had moved the fridge wire
>>> to a different rocker switch, and I was always curious why he did that.
>>> When I recently tried to repurpose the original fridge rocker switch for
>> a
>>> usb port I mounted, I found out why.  The rocker switch had gone dead,
>> and
>>> was able to easily replace.  So something you might want to consider
>>> trying, just incase its your console rocker switch.
>>> Christian Caperton #138
>>