freezer problems

[jonela]

Non car related !
I got up in the early hours to get a pain killer as I have a bad tooth ,
To my dismay I found all the electric in the kitchen was off
through a process of elimination i discovered that it was the fridge freezer causing the trip.
As soon as i fliped the breaker it triped the hole kitchen board.
So at 2 am in the morning I had the back and the top off my LG American ff,trying to fined the fault (there's no plug for ECUTalk)
Anyway I had the hoover out cleaning the condenser fins and the compressor
but it kept on tripping out,so I left it .
This morning I plug ed it in and it ran for 5 mins then tripped again.so i have put a small house hold fan pointed at the compressor and that seem to be doing the trick :thumb2
My question is how hot should the compressor get ?
It is hot here 28-32° for the past week and the compressor is running at 58°
any ac or freezer engineers out there advice needed It it fubar'd):doh

 

[rayf3262]

Is the "trip" an RCCD (earth leakage) or is it an MCB (over-current).

If RCCD then I would guess at damp/condensation getting into exposed live terminals etc.
If MCB then there it is more likely to be an electrical fault, could be as simple as a wiring fault or worse case compressor....

 

[jonela]

Is the "trip" an RCCD (earth leakage) or is it an MCB (over-current).

If RCCD then I would guess at damp/condensation getting into exposed live terminals etc.
If MCB then there it is more likely to be an electrical fault, could be as simple as a wiring fault or worse case compressor....

This is how it is set up,the freezer is connected to a twin pole 20amp MCB and that in turn is connected to a 30ma twin pole RCD.
Its the RCD that trips. john

 

[rayf3262]

As you have confirmed its the RCCD tripping then damp/condensation in the wrong place the best route to pursue in the first instance....
There is a tendency in hot weather for humidity levels to be quite high and any relatively cool surface is likely to become wet.

 

[rustic]

As you have confirmed its the RCCD tripping then damp/condensation in the wrong place the best route to pursue in the first instance....
There is a tendency in hot weather for humidity levels to be quite high and any relatively cool surface is likely to become wet.

Check there isn't a nick in the power cable, and it is sitting in any water.
RCD doesn't take much to trip it, but also consider, it might be adding to earth leakage from other devices in the kitchen, a toaster with a bit of bread on the element can do it if switched on of course.

 

[Mobieus_uk]

sounds like you need a new freezer

 

[solarman216]

but it kept on tripping out,so I left it .
This morning I plug ed it in and it ran for 5 mins then tripped again.so i have put a small house hold fan pointed at the compressor and that seem to be doing the trick :thumb2
My question is how hot should the compressor get ?
It is hot here 28-32° for the past week and the compressor is running at 58°
any ac or freezer engineers out there advice needed It it fubar'd):doh

interesting this one, first your compressor should be running around 100 C the fact that a fan directed at it suggests it is running too cool and so producing condensation on the electrical part, running too cool is either poor compressor or low gas charge, how is the F/F performing, Rick

 

[jonela]

Hi rick, It has been OK as far as I have noticed,When it kept tripring the socket circuit, I removed the multipin plug in the top that powers the compressor .This just left the internal circulation fan going.then after a while I pluged this back in and it started up again and ran for 5 hours then tripped again. The teprature in the house was 25° but the compressor was 48°which seems low.I repeated this process and it is still running after 2 hours :nenau

 

[solarman216]

Hi John can you look at the data plates and tell me what gas it is running on, Rick (R134a. R407, R404 etc)

 

[jonela]

Hi John can you look at the data plates and tell me what gas it is running on, Rick (R134a. R407, R404 etc)

R134a 0.185kg

 

[solarman216]

then the discharge to the condenser should be 100 to 150C more if it is not cooled properly, Rick

 

[solarman216]

Please ignore that last post it is wrong, I had pressure in my head, temperature should be around 60-80C Rick

 

[jonela]

I'v been measuring the output with my laser thermometer and its at about 62° at it's peek, but condenser fan still keeps kicking in and it drops as low as 48° we will see if it lasts the night without tripping.

 

[solarman216]

I would say you are low on gas, is there a charge point, looks like a brass screw on cap about 11 mm in diameter, Rick

 

[solarman216]

but having said all this, the tripping should be unrelated to low gas, think I would be removing the plastic cover on the compressor and checking for condensate running down from the return pipe to the compressor, the colder one, which maybe over or near the terminal box, Rick

 

[jonela]

will do, cheers Rick :thumb2