Our Frigoboat refrigeration
system stopped working, and I could use some help.
Basically the danfoss compressor
stopped and wont re-start. compressor
is a BD35F (with Frigomatic K35F sticker as well). The controller is a 101N0320. The system is keel
cooled, and the compressor and evaporator plate were replaced about 33 months ago in North Carolina
. The system has been in use continually since then as we are full time cruising (presently just arrived in Malaysia). It just stopped out of the blue. It only gets switched off occasionally when we are getting SSB interference
I've put a voltmeter on the terminals on the controller and the voltage drops from 13.2 to 12.6 when the compressor tries to start and fails. I'm using a Fluke meter to measure... I've jumped an LED across the small + terminal and the D terminal. I get three flashes. so, I'm trying to figure out what to do next!
There have been no recent changes to the system. Though I did install al Lithium battery
system May of 2013. And had a new zealand
technician add a little refrigerant also in May of 2013. I am suspecting the following:
1. failing controller due to over heating
. The unit is in a closed space with no fan. And its hot here! And the water
is very warm too Mid to high 80's and we've seen 93 degree water
recently. And maybe the "35" compressor is too small for my fridge which is fairly big. When we replaced the compressor in North Carolina
, the technician thought I should probably have a "50" but we put in another 35 because its what we were replacing.
2. Something in the system. I don't think the system has too much refrigerant. The keel cooler
was not replaced when the compressor and evaporation plate were replaced. But it was replaced about 6 months before the last failure because there seemed to be a lot of electrolytic erosion of the keel cooler
. So I replaced it with a used one from a friend--and we fixed the source of electrolysis
. When the compressor was last replaced it was running but we were not getting cooling
. And after we replaced it, the system took a pretty good long time to cool down the fridge at first, but it holds it down when once cool. I had always thought it was a little low on refrigerant, because we've never seen 100% frosting. Which is why we added refrigerant in NZ--and the cooling
rate improved after this, but still not 100% frosting of the evaporator plate. But, the North Carolina installer thought it might have been possible that there was some issue with the crud in the keel
cooler. But the system has really worked pretty well for the last couple of years--and our energy consumption
has seemed good.
3. I've also suspected that we didn't need to replace the compressor in NC!! I'm more educated about the system now...
So, the question is, what testing can/should I do now to figure this out, and get parts
ordered if necessary?
s/v Morning Glory