What is wrong with this Waeco

I just bought a Waeco 50, and it only runs for 24 hours on a fully charged landcruiser sized battery.

The fridge cuts out at about 12.6 volts.

I have the fridge set on low power and the switch on normal use. I have checked the lead and in reads the same volts as the battery.

Any ideas would be appreciated.

Regards
Geoff



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Reply By: Serendipity (WA) - Monday, Nov 16, 2009 at 20:14

Monday, Nov 16, 2009 at 20:14
I have found the biggest issue with car fridges is poor wiring going back to the battery. It may read the same volt but the amp could be down considerably with a skinny lead. I have removed the cigarette plugs from my waeco and fit proper low volt plugs. I have run proper 6mm2 wire on the shortest route from the battery.

I then make sure the waeco is not in direct sun or sitting in a baking back of a car.

I would check the condition of your battery with a hydrometer. It may be charging up to what looks like a good charge but losing it quickly due to a failing cell.

I also run twin batteries in my car with a smart isolation so the waeco does not affect the starting battery.

I am no expert and do get baffled with electricery but this is just what I do.

David



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Follow Up By: Jethro T - Monday, Nov 16, 2009 at 20:36

Monday, Nov 16, 2009 at 20:36
Thanks David,

The wiring might be the problem. Is there some way to check the amps through the wire, my multimeter has ohms but I'm not sure how that works, only ever used it to check voltage.

I think the battery is ok. My brother used the it on his engel and it ran for 4 days.

Regards
Geoff
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Follow Up By: Member No 1- Tuesday, Nov 17, 2009 at 07:38

Tuesday, Nov 17, 2009 at 07:38
check your voltage at the fridge and battery with fridge running...ideal scenario is bugger all voltage drop between the two
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Reply By: Member - Flynnie (NSW) - Monday, Nov 16, 2009 at 20:33

Monday, Nov 16, 2009 at 20:33
The Waecos used to have a switch for the low battery cut off. Depending on setup any of the three settings could be the best. Cutting out at 12.6 volts suggests it is set to the highest voltage cut out. Try one of the other settings.

Caution that the lower setting (from memory around 11.7 volt) may draw a battery down too low if happens regularly and may shorten battery life. Definitely not to be done to a starter battery. The mid setting is most likely the one to use in most cases.

On my Waeco it is possible to accidentally move the switch when handling the fridge and not notice it

Cutting out around 12 volts which is roughly the 50% discharge point is probably a good starting point to aim for.

Flynnie
AnswerID: 391439

Reply By: Member - Phil G (SA) - Monday, Nov 16, 2009 at 20:39

Monday, Nov 16, 2009 at 20:39
I think those Waecos give you a choice of 3 cutout voltages - something like 10.5, 11.0 and 11.9 - any idea which yours is set on?

" have checked the lead and in reads the same volts as the battery"
It will measure the same when the fridge is not cycling - you need to do this measurement while the compressor is running. On "low power" the waecos still draw 5 amps.

I agree with david's comments that you also need to have good wiring and connectors going to the fridge.
AnswerID: 391440

Follow Up By: Member - Phil G (SA) - Monday, Nov 16, 2009 at 20:43

Monday, Nov 16, 2009 at 20:43
Flynnie just beat me to it!
Also forgot to mention - your fridge needs a good connection to earth - some run a lead back to the battery, others earth to the body, having cleaned off the paint on a bolt hole, vaseline it and attached the earth cable.
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Reply By: Geoff (Newcastle, NSW) - Monday, Nov 16, 2009 at 20:47

Monday, Nov 16, 2009 at 20:47
Hi Geoff,
Your Waeco should follow these voltages on each of the settings,

As has been mentioned above voltage drop in the cable may well be causing it to drop at an apparent battery voltage higher than what is in the table below.



Hope that helps,

Geoff

Geoff,

Grey hair is hereditary, you get it from children. Baldness is caused by watching the Wallabies.

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Reply By: Member - Graham H (QLD) - Monday, Nov 16, 2009 at 21:17

Monday, Nov 16, 2009 at 21:17
I have a 60 ltr fridge freezer in the car running at -10 and its going fine in Kalgoorlie where its about 35 at the moment.

It has been on battery for over 2 days and still going ok.

Has the Raps 12 controller and wiring so is heavy enough.

HAs earth going back to battery.


AnswerID: 391447

Follow Up By: Member - Mark (Tamworth NSW) - Monday, Nov 16, 2009 at 22:06

Monday, Nov 16, 2009 at 22:06
I had these problems, but they were rectified with heavy (6mm2) wiring from a Waeco wire pack.
They are about $100, they provide proper wiring and two plugs (one Navra one cigarette) with switching for "on all times" and "on only at acc". Undoubtedly you could probably make them yourself cheaper.

Not heard of any 4WD with standard wiring adequate to run a 40+L fridge. Without the heavy duty wiring loom, you may as well think of them as a poor esky when you don't have the ignition on. They only tell you these things after you buy the fridge and in small print! You should install heavy duty wiring instead of buying the insulating jackets.

My CF50 in 35C max days will run for 3+ days on 130Ahr battery on my CT when I switch off the low voltage option (but I may be shortening the life of the battery in the process).
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Follow Up By: Member - Graham H (QLD) - Monday, Nov 16, 2009 at 22:25

Monday, Nov 16, 2009 at 22:25
Thats what a Rps 12 does .
As described above

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Follow Up By: Member - Graham H (QLD) - Monday, Nov 16, 2009 at 22:26

Monday, Nov 16, 2009 at 22:26
read RAPS 12
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Reply By: Member - ross m (WA) - Tuesday, Nov 17, 2009 at 02:05

Tuesday, Nov 17, 2009 at 02:05
I ran my cf50 waeco off a large cranking battery last weekend for 40 hrs.
The lid was probably opened 40 times according to how much beer I had left and it was still giving the beer a nice frosty head LOL
AnswerID: 391469

Reply By: Robnicko - Tuesday, Nov 17, 2009 at 12:05

Tuesday, Nov 17, 2009 at 12:05
I bet it's the waeco lead.

make one up using 6mm wire and 50amp anderson connectors. You still use the original plug that goes into the fridge but ditch the rest. Leave about 1 inch of original cable and solder it to the 6mm.

I did this to mine about 1 year ago and it has never had an issue.

Over Cup weekend it ran for 4 days without the car being started in th Vic High Country where temps were in excess of 30 degrees every day and it never got above 3degrees with 2 led's lit(older control panel)

Oh, and make sure you use an inline 7.5 amp fuse as well.

Rob
AnswerID: 391488

Follow Up By: andoland - Tuesday, Nov 17, 2009 at 12:32

Tuesday, Nov 17, 2009 at 12:32
I have just done the same thing a couple of weeks ago. On the last two trips I noticed the error light flashing for low voltage when I knew the battery was charged. Out with the multimeter and I discovered a 1V drop across the cigarette plug. I have replaced the cigarette plug fitting previously because it had partly melted at the tip and now I know why.

I have now replaced it with a 50amp anderson plug and it runs perfectly.
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Follow Up By: PradOz - Tuesday, Nov 17, 2009 at 17:58

Tuesday, Nov 17, 2009 at 17:58
Hey ROB

for most novices we see a "lovely" neat cigarette lighter socket set up in the back of our vehicle, so find it hard to see how a similarly neat job can be done when fitting anderson plug setup.

If you have a length of cable running from the fridge to the anderson plug, and then add another length of cable from the battery and leave it 'hang out' in the rear cabin, it could get messy or be dangerous if left lying in a position where it could be worn through or cut accidently by the other stuff thats stored in the cabin

Do you simply leave the plug and cable (from the battery) tucked away somewhere in the back of your 4by or is there a way of fitting the anderson plug so that it sits nice and neat, flush with a rear internal panel?

Just wondering if you (or someone else) have a photo/video you can post here or maybe email that shows a neat setup of the installed anderson plug?

Thanks Mick

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Follow Up By: Member - Graham H (QLD) - Tuesday, Nov 17, 2009 at 21:29

Tuesday, Nov 17, 2009 at 21:29
My RAPS12 is attached to the cargo barrier and has never been knocked or damaged and have hauled the fridge out at least twice a week for the last 190 months


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Follow Up By: Robnicko - Tuesday, Nov 17, 2009 at 22:22

Tuesday, Nov 17, 2009 at 22:22
PradOz,
In the back of my 80 series there is an ashtray on the drivers side rear wagon area. I mounted the anderson plug within that ashtray so when not in use I just shut the ashtray. I saw that on an American 4wd website.

Rob
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Follow Up By: PradOz - Tuesday, Nov 17, 2009 at 22:50

Tuesday, Nov 17, 2009 at 22:50
Thanks Rob - very clever, now you have me thinking, cheers Mick
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Reply By: Tony - Tuesday, Nov 17, 2009 at 12:46

Tuesday, Nov 17, 2009 at 12:46
We have noticed that we dont get long out of our CF40 waeco whilst running off the 105A/H battery.

Currently we use the cable supplied with the waeco which has the cigarette lighter type end. that then plugs in to the cable with the battery clips on.

The waeco is set to LOW on the side..we were unsure what that meant so have never touched it.

If we wanted to make it a better connection with better cable do we just need to use a little of the standard cable from the fridge plug and solder it to a larger cable as mentioned above with the suitable plug on the end.

Can anyone explain what is meant by running an earth back to the battery. all this 12 volt stuff baffles me at times. we only have the cables that came with the fridge.

Cheers in advance
Tony and Dawn
AnswerID: 391493

Follow Up By: Robnicko - Tuesday, Nov 17, 2009 at 12:57

Tuesday, Nov 17, 2009 at 12:57
Tony,
Run a dual core (2x6mm) cable from the battery to the outlet where the fridge is. Meaning red goes to positive and black wire to negative on battery. If you only run the fridge of this you should be fine. But, as I stated earlier, the Waeco lead is no good, unless the engine is running where there is more amps flowing.
To do a simple test with the standard lead, plug it in and fire up the fridge for 10 minutes or so. Then remove the 'cigarette' plug and feel the -ve tip....I bet it will be very hot. That is because it makes a very poor contact. With the anderson plugs they make such a good connection that they never get hot as they conduct electricity very well. That is where the majority of fridge issues lie.

Rob
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Follow Up By: Robnicko - Tuesday, Nov 17, 2009 at 13:04

Tuesday, Nov 17, 2009 at 13:04
Tony,
in the above I meant to say feel the +ve tip. it will be hot.


Cut the lead at the fridge end leaving an inch or so of old cable.
Solder a length of 6mm cable to the plug (making sure you get the polarity correct) and terminate the end with a 50amp anderson plug.
Just before the anderson plug, solder in a Fuse holder and use a 7.5amp blade type fuse.
You will also need to install a 50amp anderson plug in the vehicle where the fridge gets it's power from.This is what I've done and I use an Exide Extreme battery as the auxillary in my 80 Setries. No bull, I can leave it running for up to 6 days and it has never seen an error light since I did this.

ROb

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Follow Up By: PradOz - Tuesday, Nov 17, 2009 at 17:30

Tuesday, Nov 17, 2009 at 17:30
Hi TONY

Can be a bit baffling all this 12V wiring stuff & batteries etc etc hey!

Maybe someone can point you (and the rest of us) towards somewhere on EO that has a drawing/diagram showing exactly what Rob suggests you do. It sounds quite simple and something we should do from a safety point of view if the standard cigarette socket overheats etc.

I have seen some simple and neat diagrams on here that were from Derek from ABR - SIDEWINDER which clearly show the layman exactly what is required, so maybe he or someone else has done a suitable diagram that explains this better. "A picture paints a thousand words etc"

Or better still maybe someone can post a photo(s) or short video of what is required & their finished install?

Would be great for the many novices on EO

cheers MICK

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Follow Up By: Member - Mike DID - Wednesday, Nov 18, 2009 at 08:01

Wednesday, Nov 18, 2009 at 08:01
"Then remove the 'cigarette' plug and feel the -ve tip....I bet it will be very hot. That is because it makes a very poor contact. With the anderson plugs they make such a good connection that they never get hot as they conduct electricity very well. That is where the majority of fridge issues lie. "

Yep. Cig Plugs depend totally on the pressure of the plug being held in the socket for the centre-pin contact - they were never meant for continuous duty - Andersons maintain excellent contact pressure. Cig Plugs are brass, Andersons are silver.
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Reply By: Member - Mike DID - Tuesday, Nov 17, 2009 at 13:38

Tuesday, Nov 17, 2009 at 13:38
The ONLY way to check if you have a wiring problem is to remove the cover on the Waeco and measure the voltage at the back of the DC connector on the fridge, when the COMPRESSOR IS RUNNING.
AnswerID: 391501

Follow Up By: Robnicko - Tuesday, Nov 17, 2009 at 14:47

Tuesday, Nov 17, 2009 at 14:47
At the actual compressor is the most accurate way however the lead mod that I described will solve the problem.

Also, some Waeco's were manufactured with the wrong size thermal fuse in them which cut out at 5amps. Waeco change these under warranty to a 9amp thermal fuse.
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FollowupID: 659408

Reply By: Member - steve. B... (NSW) - Tuesday, Nov 17, 2009 at 17:18

Tuesday, Nov 17, 2009 at 17:18
I was looking through these posts and there is definitely a problem here. I came across the same situation when I was perusing through a Cape York Treks article. I reported it to info@ explorOz.com.au and within minutes Damian had sorted it out and thanked me for pointing it out to him.

Perhaps in a short while we can all understand as Laymen the Weaco Problem.

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