Disabling under voltage protection on Danfoss BD35F

Just to confirm,
Steve, do/did you have a wire going from the thermostat to connection P, then?
Michael, do you have nothing at all connected to P?

My device has just started showing the same symptoms. I'm sure its a dodgy connection but haven't yet had time to check. still, if lowering the cut-out is an easy mod then it is tempting to try it.
 
Steve C Cronin said:
Inside the thermostat housing is a little yellow link which is there to protect single battery installations in recreational road vehicles - you wouldn't want to have an unstartable Motorhome in the Mohave desert, would you? However it cuts the refrigeration at far too high a voltage for marine, deep cycle large capacity applications. Remove this and reconnect the lead back on to the terminal and you will transform your fridge. Did mine three years ago and now it behaves perfectly. My neighbour did his last year and is running around telling everyone he knows. Best mod you can make to a waeco fridge. There is an info sheet provided by Danfoss but it can be misleading. Just take out the link which bring down the voltage to a level your system will cope with. I have that info sheet but in pdf form. If I can get it converted and downloaded here I will do.

Addendum: Seems that someone else has sent you that data sheet. What is confusing is that from the diagram "resistor 9" appears to be at the compressor end of the wiring. It is NOT. It is, in fact in the thermostat housing and actually IS the "little yellow link" of which I spoke earlier. Remove that and you have a proper marine fridge.
Click to expand...

Steve
I'm having the exact same problem.
But I have taken apart my thermostat (Waeco CR50 fridge) as you suggest but I don't understand the part about disconnecting the yellow cable because when I do this the fridge doesn't work!

Surely I need this yellow wire to connect somewhere to complete the circuit?

Please could you clarify what I should do. Thanks.
 
Agree with all the other posts. Most likely a cable problem. I had similar. Saw good voltage at fridge on meter, but it failed to start. Issue was simple corrosion on the spade connectors, which meant that it could not get a good enough connection to draw the start amps required and gave up. Cleaned those and good since.
 
gregcope said:
Agree with all the other posts. Most likely a cable problem. I had similar. Saw good voltage at fridge on meter, but it failed to start. Issue was simple corrosion on the spade connectors, which meant that it could not get a good enough connection to draw the start amps required and gave up. Cleaned those and good since.
Click to expand...

This is an ancient thread but the solution remains the same. I posted somewhere else about it a week or two ago. My solution was the same as yours: I waggled the spade connectors and the problem mostly went away. There is still a problem that when the domestic water pump is run the fridge connection drops out, which suggests that I need to spend a bit more time on the other spade terminals in the Danfoss unit. I know that the supply to it is good.
 
It is indeed, Vic, and was noted.

I've no idea what, if any, forums rules might apply to ancient threads, and really don't care.

The new post is exactly on the point and nothing material has changed in the intervening years (save for the departure of Groanin' Cronin). Under those circumstances, it seems to me perverse to demand that a new thread be started. If the newcomer's post were a complete non-sequiter, it might be different, but it isn't. There will no doubt be other views, and that's fine, too.
 
macd said:
... it seems to me perverse to demand that a new thread be started. If the newcomer's post were a complete non-sequiter, it might be different, but it isn't. There will no doubt be other views, and that's fine, too.
Click to expand...

The problem is that most replies will address the original problem, not the new post.

WARNING: Old thread
 
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nigelmercier said:
The problem is that most replies will address the original problem, not the new post.
Click to expand...

That's a reasonable point, although my experience is that most replies seem to address themselves to more recent posts, not the original. Regardless, in this case the original post and the exhumer's issue is the same -- in which case I'd again suggest that to demand that a new thread be started is perverse. (Bearing in mind, too, that the exhumer is a first-timer, as is often the case, and may have to wait a while for a new thread to hit the screen.)

Often, of course, old threads are exhumed due to simple carelessness. Surely it can't be beyond the wit of Time Inc. to trigger an on-screen warning to anyone attempting to post on a thread more than, say, 12 months old. A simple: 'The last post on this thread is x months old. Are you sure your post would not be better made on a new thread?'

Since this facility does not exist, I'm inclined to the view that the 'problem' is inconsequential.

P.S. I nonetheless reserve the right to take the P out of extreme exhumers, especially where the revival is unintentionally comical ;)
 
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macd said:
... Since this facility does not exist, I'm inclined to the view that the 'problem' is inconsequential.
Click to expand...
But the facility does exist, they won't install it.

Back on topic ...

[1] To successfully change the low-voltage cut-off point, one must first get the correct document for their particular model. Link posted near start of this thread.
[2] If the motor cuts out without reason, there is too much voltage drop; either a bad connection or inadequate wire size.

WARNING: OLD THREAD
 
nigelmercier said:
But I didn't take the piss, I just flagged it as a necrobump. I have no idea what the problem is.
Click to expand...

Thanks. I've just read it, and I'm as baffled as you seem to be. If the offending item is a slang word ending with an (often diminutive) 'ie', doesn't that sit a little oddly on a yottie forum? Surely it can't be the 'necrobump'? Could the administraties please clarify?

Sorry, tim_davis, forums get like this. Don't be put off. I'm sure you'll get the answer you need sooner or later, if you haven't already.
 
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Sorry, but it seems perfectly clear to me. It's also perfectly clear that the owners and administrators of the forum consider it acceptable to add to older posts. Some forums do (this one included), others don't.

Their position is
The forum is an archive open to new contributions. Whether users engage with recent submissions to an aged thread is a matter for them.
Click to expand...
 
PaulRainbow said:
Sorry, but it seems perfectly clear to me. It's also perfectly clear that the owners and administrators of the forum consider it acceptable to add to older posts. Some forums do (this one included), others don't.

Their position is:"The forum is an archive open to new contributions. Whether users engage with recent submissions to an aged thread is a matter for them."
Click to expand...

That position seems perfectly fine to me, and thanks for posting it.
However, I think the lack of clarity was in the reason Nigel was sent to the naughty corner, which still baffles me.
 
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