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Discussion Starter #1 (Edited)
Last time I used my van (first time actually) I noticed a problem with the above fridge.

Halfway through the weekend it stopped cooling and a fault light started flashing inside. Got out the handbook and the code indicated 'out of voltage range', I just assumed it was low voltage in leisure battery.

Thought nothing more of it. Had battery on charge tonight ready for weekend. Put fridge on got same error, battery fully charged. Even got same error with van plugged into mains.

Read manual again, it suggests cable might be too small. What sisz cable has anyone used to wire one of these fridges in?

Has anyone else had a similar error with a Waeco compressor fridge? If so what might be wrong?

Going away for the weekend and it looks like it will be warm beer.

Any help appreciated.

Cheers
 

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Undo all the terminal blocks or connectors and clean and refit. worth a try as many faults on compressor fridges result from bad connections.
 

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Last time I used my van (first time actually) I noticed a problem with the above fridge.

Halfway through the weekend it stopped cooling and a fault light started flashing inside. Got out the handbook and the code indicated 'out of voltage range', I just assumed it was low voltage in leisure battery.

Thought nothing more of it. Had battery on charge tonight ready for weekend. Put fridge on got same error, battery fully charged. Even got same error with van plugged into mains.

Read manual again, it suggests cable might be too small. What sisz cable has anyone used to wire one of these fridges in?

Has anyone else had a similar error with a Waeco compressor fridge? If so what might be wrong?

Going away for the weekend and it looks like it will be warm beer.

Any help appreciated.

Cheers
I used 6mm2 cable for my Waeco compressor coolbox. My batteries sit in a similar position to yours at the back of the van.
 

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also check water level in battery as this can affect the voltage - use distilled water to top up - just had a similar problem with my 12v fridge (not Waeco) and found the problem tonite - hoping the topup and charge tomorrow will sort it
 

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more info - found that the battery terminals were loose on the leisure battery and also a bit corroded - sorted that and charged batt plus topped up h2o levels(use distilled water) and its working fine
 

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Discussion Starter #7
Found source of problem.

Wiring not big enough for distance travelling, too much volt drop. Just put a bigger cable in and everything in now working OK.

Lesson to be learned:

Don't just put a cable big enough to carry the current, remember the volt drop!

Thanks for all your advice.
 

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what size did you end up using? Got the same fridge and same problem so need to update.
Cleaning/ checking terminals and repacing cable
ta!
 

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what size did you end up using? Got the same fridge and same problem so need to update.
Cleaning/ checking terminals and repacing cable
ta!
Depends how long your cable run is, I used 6mm2 for a 5 metre run from the battery to the fridge as per the recommendations by Waeco. I have a FT-30 coolbox but it probably uses a similar compressor.

Looking in my Waeco manual even for a 2 metre run they recommend 4mm2 cable.
 

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Depends how long your cable run is, I used 6mm2 for a 5 metre run from the battery to the fridge as per the recommendations by Waeco. I have a FT-30 coolbox but it probably uses a similar compressor.

Looking in my Waeco manual even for a 2 metre run they recommend 4mm2 cable.
Crazy isn't it! Just been looking at the specs myself, for a 3m run from the battery (upto and back from a switch) it's 6mm2!! That's the same as 30amp 240v cable for electric cookers!!! Think am gonna scrap the run to the switch and run it straight to the battery with an inline fuse, so I can use a bit shorter cable with more flex!

Muttz Nutz of fridges tho, mines the CB40, been wondering why it would intermittently stop working for no apparent reason, guess voltage drop was the reason! Manual is available here, with the recommendations of cable cross section vs length of cable - http://www.waeco.com/tmp/CB_RHD_B_10s_09.pdf
 

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I know this is an old thread but I found it because I have a similar problem. My Waeco compressor 'fridge is flashing low voltage even though the battery is brand new and fully charged. The odd thing is it works when I'm driving!

My van was converted professionally about 15 years ago so I can't think it's the wrong wiring. Could the wiring have "worn out" or something?

It's very frustrating, I've just been around Spain with a conked out 'fridge and replaced the battery. It then seemed to work OK but within weeks it's started the low voltage palaver again.

Anybody got any ideas please?

Chris
 

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It could easily be corroded connections. You need to get into the area where the connectors and control boxes are and do a disconnect, clean up and reconnect. That will at least narrow down the issues.
 

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That sounds like a possibility as the problem seems to be a bit erratic in that it works sometimes and not others.

I can't do any of this stuff myself(!) so do I go to a camper 'fridge specialist or would an auto electrical place be able to do it?

Thanks for your help

Chris
 

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I think most auto electricians and potentially any mobile caravan repair guys would probably be able to diagnose the problem with a volt meter.
 

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I just fitted one of these fridges today, so far seems ok but was a little confused as to the size of the wire needed. When working out the length do you include the earth return.
 
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