Question about Nor-Lake NLF72-S 3 Door Bottom Mount Reach-In Freezer | 70 Cu. Ft

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Y would suction be high and compressor cutting out on internal overload?

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Not pumping.

Posted on Jan 02, 2016

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Posted on Jan 02, 2017

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1 Answer

Which line is the low side on my chest freezer ?


Ok, basic refrigeration here. The 'high side' contains the high pressure vapor leaving the compressor and going to the condensor to condense into a high pressure liquid. The 'low side' contains low pressure refrigerant vapor within the evaporator and the suction line back to the compressor. The same amount of vapor has to return to the compressor as left the compressor. So thinking about pressure solves the problem....High pressure equals small line...
Low pressure equals larger line. The low pressure vapor will fill a larger space than high pressure vapor so it has to travel in a larger line. The suction side is the bigger of the two and if the unit is functioning, it will be the one cooler to the touch.

Though this is basically correct in theory, it is not a totally perfect way to descsribe an answer to your question, but it was fun to try.

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sounds like compressor has failed to start and overload is triggered(red light) it could be start capacitor fault or overload itself faulty .
If both of these items ok and compressor has power to it then compressor will require replacing.when you switch of refrigeration equipement the oil in the system will drain down to the lowest point and thats normally compressor and if its filled up the suction side of compressor it will cause compressor to lock up (hydraulic)

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My upright freezer has stopped working. compressor cuts in every now and then, but cuts straight out after running for about 5 seconds.


your compressor is busted due to low chARGE OF OIL in the compressor or meybe the internal overload of the compressor collaps you must replace your compressor with the same s/n num..and size...

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Model ffu213caw1: my freezer stopped cooling recently.there is power to the uniti hear a small click down near the compressor like it is trying to start and then it stops.compressor is warm to the touch...


Compressor is bad the clicking noise is the Start Relay/Overload is kicking on and off. compressor is warm because it's trying to start but can't Frigidaire is known for bad compressors. I don't think the Start Relay/Overload is bad because the compressor gets warm.

May 20, 2010 | Frigidaire 21 cu. ft. / 595 liter Upright...

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Compressor keeps clicking on then within 2 secs cuts off then on


sounds like you need to replace the relay/overload on the compressor.

Oct 13, 2009 | Frigidaire Freezers

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The freezer works fine, but if you unplug it, it won't start back up, you have to let it sit unpluged for about 30 minutes to an hour before it will come back on. Its like it needs to cool off, it does get...


The high side and low side of the refrigerant system , have to equalize , before the compressor can start . If you unplug , then plug back in , the high side has a lot more pressure , therefore the compressor will not start and the overload will cut the compressor off . When overload cools slightly , compressor will try to start again . If pressures not equalized , overload will cut compressor off again . As this happens , the compressor will get hotter and hotter . Eventually , pressure will equalize and compressor will continue to run . Very bad on compressor and components .

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1 Answer

How to tell if you have a bad suction valve for ac compressor?


Hey there. First question I have is if you have a heat pump or straight ac. Straight ac is easy to diagnose. Your suction pressure will be high, your head pressure will be lower, not sure how clean your condenser coils are so its hard to say how high. Your amp draw on your compressor will be lower than normal. Also, when looking at the suction pressures, you have to keep in mind what temp the air hitting the evap coil is. If it is warm, that will make your suction pressure go up. Another way to check the vavles is to hold the suction line at the compressor when you shut it off. If the temp goes up the second you shut it off, this tells you the hot gas is leaking through your suction valves. You can also try to pump the system down, then shut it off and see how fast the pressure builds back up, this will give you and idea how fast it is leaking through. Let me know if you need any thing else, I'll be here.
seth

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1 Answer

Coldtech 65slc-lh-may compressor cycling on overload. does it have internal overload?


Typically, I know all AMERICAN MADE fractional horsepower compressors do not have internal overloads.
I just was not sure if this MADE IN CHINA compressor might have a different internal winding design that included an embedded winding overload. Upon further testing, though, it seems that the start components and overload are external.
Thank you,
Jerry Bullock

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Freezer compressor not able to start and noisy.


It sounds like the compressor is locked (seized). The current overload is doing it's job by opening the circuit. Take a current reading, on the common leg, while the compressor is trying to start. The locked rotor amps (LRA) for that compressor will be indicated on the compressor tag. If it's drawing LRA while trying to start, you need a new compressor. Which is the costliest part in that unit and requires specialty tools to replace.

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