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Re: Liebherr GN2856 nofrost
I took the fan out. Turns out that when the metal clip is removed from the fan bracket, and the fan blade is pushed off, there is enough clearance to twist the fan motor on the rubber grommet and remove it out of the bracket. I removed the motor out of the white plastic cover, and then was able to take the motor apart. Simple AC brushless motor. Looks the the rotor was starting to rub on the side. I greased up the bushings for the rotor shaft and put it all back together. The freezer ran down to -15 no problem, and the fan worked for a few days without making any noise. However, the fan squeak and rumble returned, and I imagine that it is not far from locking up, which I think is what happened in the first place. So I’m going to try to verify the right fan motor to buy. I hope this helped some of your readers.
Re: Liebherr GN2856 nofrost
Update- I let it run a few hours more, stable at -15, fan was not running.
I opened it up for a second, then closed it up. Fan started right back up.
I then opened it up, took down the evaporator and insulation so I could get a good look at the fan, and closed the door switch.
Fan comes on, but has this high pitch squeak/squeal to it. Moving it by hand, I can’t feel any interference with the housing. I think it is a lot noiser than a fan that should run almost constantly should sound. So I’m leaning towards the fan/fan bearings. Is there any repair to this component? I’m not even sure right how how to get it out.Re: Liebherr GN2856 nofrost
Nope, no typo.
I’m in Missouri, USA.
This site was one of the few places that looked like they still sold/serviced Liebherr.
I bought this thing used a few years ago in Germany.
It is 240v and right now I’m running it on a step up transformer.
Been running fine for about a year in the US.Quick update- turned it back on last night, adjusted temp to -15. No food in it.
This morning I see it is at -15; didn’t have time to stop so I returned in about a half hour.
Still at -15. Went over to it and I can hear the fan running. It is noiser than I remember it being. When I bought it, I don’t think I ever heard the fan, and just barely hear the compressor buzz. Anyway- I opened door, I can hear the fan spin to stop, again not too healthy; close door it starts up again. So maybe I’ve got a fan issue and not a sensor issue? A quick search on ebay brought up a couple sensors in NY; thought the part numbers didn’t match. I’ll pull the evap down again, make sure that a wire didn’t move into the fan. The front of the shaft looked like it was in a rubber grommet. I wonder if it would help to lube that with something.Re: Liebherr GN2856 nofrost
Door opened/closed shouldn’t be an issue for fan voltage as long as the door switch/reed switch is closed, correct? That is what I meant; you’re going to have to have the door open to do fan voltage checks at the fan unless you cut a hole in the back of the unit. I messed up my sensors in my response. Of course I know that the evap sensor has to be the colder one. That’s the first thing I tried, to put that one in ice, door switch jumped for 20 min, still no fan.
I put all the sensors back in their orig positions a few hours ago and turned it back on. I can do some voltage checks on the pcb without opening the door. It has been a few hours now, so I hope it’s working, or at least trying to turn the fan on.
Thanks for the part number; I imagine that this is where this is going. I just wish that one of them didn’t move at all and was a more definitive “bad”. I hope there is a source for the parts over here in the colonies.
Re: Liebherr GN2856 nofrost
I’ve already checked the voltage (none) and resistance (open) at the fan; of course I have it apart with the door open. My concern is if I am putting the sensors at the right temp that the PCB will turn the fan on. I wasn’t sure if the evap sensor would get cold enough with me having the door open. I’ve read that the evap sensor has to be a couple degrees warmer than the temp sensor. I’ll shove it all back in there and run it for 1/2 hour; I think I can figure out which terminals run the fan. That way I can check it with the door closed and hopefully at right temp. If that don’t work, no power; I guess I’m looking for a couple sensors. I think I’ve only got about $150 into this freezer. It would be a shame to junk it; it’s been the best freezer I’ve ever owned.
Re: Liebherr GN2856 nofrost
Yes, the fan is not working. The evap/compressor seem to be cooling fine and I see no evidence of coolant oil anywhere. Both sensors move immediately from about 6K to past 13K ohms when placed in ice water. Is there different/intermittent faults with these? How much do these sensors run. Might be expensive for a troubleshooting step.
I did have the magnetic door switch closed for at least 15 minutes when running with no fan power. Is there another switch I’m missing?Thanks for pointing out the resisance on the motor, I don’t think I would have caught that. My next step was to remove the plastic evap cover and try to get the motor out.
Does anyone have any steps/checks to rule out the PCB?
Thanks
