Can 12v danfoss compressors start some times when on way out? who has had one bu

Hi Geoff

error code with 3 flashes

wiring size is pretty big as its running o a loom supplied / installed to run a liemac what has big power requiremnet much more than this unit.

Using 12volt 2 pin polarised plugs

battery only 6 months old and has condition leds on rotronic independant charge system

also faulted on the 240v adaptor

I stiill have a gut feel its not the compressor?

regards
GN

Hi GN,
Gut feel is good most times,

This one, "also faulted on the 240v adaptor" tells me your problem is most likely inside the case of the fridge.

Oh, one more thought, do you use the same cable between the fridge and the 240 adapter as you do between the fridge and the "12V wall outlet" for want of a better term?

It may be a faulty cable or plug if you have a common component on both battery and 240V adapter power.

It doesn't look promising, this is from the Waeco book which "should" be valid for all Danfoss compressors,

Three Flashes
Motor Start Error

If your error light is flashing three times every 5 seconds, the rotor may be blocked or the differential pressure in the refrigeration system is too high or a faulty compressor or faulty control module.

Geoff

Yep i agree the fault has to be in fridge.
I have replaced the wire from the power supply to the fridge and have bypassed the plug / socket in the side of wall to eliminate that.

so yes have relpaced black box, but what about the switch etc ???? surley they could be als faulty???

wanted to have more of an investigation this evening but bugger would not fault.

Now dont trust it and not sure what to do.

regards'GN

"bugger would not fault."

That is frustrating!

I'll send you an MM to swap email addresses as I've just found a BD35 Danfoss technical document.

It's only 2 pages but it shows the wiring of the compressor and the black box.

Geoff

Hi Geoff
thanks for the email, i checked it all and seems all correct and good, and it is running / starting now ie will NOT fault, so not sure what to do now??
many thanks GN

Hi Graham,

The only other factor I can think of is heat!

Was the compressor exremely hot when it wouldn't start?

Geoff

Hi Geoff
yes it was hot, the ambient temp was high 30's to 43 when trying to start up, but this shold not stop it.
the compressor has not been running for a few weeks so was not hotter from running earlier.
also when it did go, it then would not start again the foloowing day.
but still as i said the darn thing will now NOT fault so very difficult to find the cause.

I have found out that even the cooling fan can cause it to fault if the fan is faulty but again cannot try as wont fault.

i talked to evakool and they are looking for a local danfoss repairer to take a look at it.

thanks again GN

Did yours give up? Warfer?
If so what was the fault?

GN

Hiya GN

Nup mines fine and havnt come across anyone who has had an issue with them...Do you hav the Troubleshooting Flow Chart ???? and where are you in Vic i can look up the nearest Agent to You..But if you have the chart its on the back...


Cheers

It says on my chart Three Flashes... 1:Seized Compressor,2: AC Adapter try running in car. Have you replaced the fuse with brand newie ???

Cleaned Compressor and Fan (do not bend fins)

Hi Warfer
I have changed fuse to a circuit breaker.
and blew all dust out with air compressor, funny thing was when i did this it went after not starting for a few days and i thoought no way could this have realy fixed it, but then next day went stright to fault again.

Compressor not siezed as since it started faulting it has been running at times? but then will at other time not start / goes straight to fault.
Biggest problem now is that it will NOT fault so how do a find the fault? and so i dont trust it will not let me down when out bush.



not realy sure what do ???
Regards
GN

I would like to know how often a BD35 compressor do fail and if is is reasonably possible then that the compressor may be on the way out and so maybe right to put new compressor in it?
But dont want to do that if they hardly ever fail / wear out and then chances are i am putting a new one in for no good reason and the fault is some other cause???

I read that even faulty fans can cause the electronic box to shut down!

***Biggest problem now is that it will NOT fault so how do a find the fault? and so i dont trust it will not let me down when out bush.**


While at home leave it plugged to the 240v for as long as you can,i do with mine just to keep it going instead of leaving it out back for months on end before next trip..

If you hav evakool adapter always make sure its switched to 240v not charge...

Cheers

Hi Warfer
Good idea but i know there is a fault some where and even if it ran for weeks at home i still would be not confident.

I will call evakool tom as they have been VERY VERY helpfull in the past.

GN

GN
If you are in Vic ring Peter Mackay of Oze Fridge. He is up near Shepparton and he carries all the Danfos gear and is a refrigeration Engineer.
It may be cheaper than shipping back to Qld if its out of warranty.

He builds eutectic systems now but has a lot of years of experience under his belt.
Ian

Thanks Ian, will check him out as is much closer although freight costs can be unusual at times.
Would be good just to get another opinion from some one who knows their stuff.
I dont have much confidence in local fridge's
regards
GN

With all the stuffing around you hav done GN you may hav inadvertently fixed the issue,i'd let it run at home for a moth or two (putting in a couple of water bottles) to see what happens,Where are you in Vic,i'll giv you a closer Refrigeration Mechanic for Evakool..


Cheers

Mildura

I am still to see anything that has let me down once, stay fixed without fixing (does that make sence?)

Would be good to have someone local who is up to speed.

Perhaps there is someone, i have had some issues with cool rooms previously and have lost my faith in some of the local so called fridgies'

Thanks Warfer

No worries GN,when you eventually find the fault could you PM me what it was..

Cheers and all the best.