Suddenly tripped off house power, could not switch on the mains switch because it is tripping off.ultimately unplugged the fridge and got the power back in the house.but firdge not working.we live in a countryside.refrigeration mechanic not available for 200kms.electrician cut down wires going in to the compressor, fan, heater pad one by one.finally got the answer.power was not tripping when the wire to the heater was cut off.asked us to use the fridge like that.only freezer working,down refrigeration not working.it is an LG fridge.could you please help
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Re: suddenly tripped off house
Hi akula, 200 ks to a fridgie, LG appliance, you must be in Australia;) Is it the earth leakage circuit breaker operating. If so, then you have a leakage problem to earth from the heater pad(not quite sure what that is, but this problem will need to be repaired. Am doing some research to see if there is anything that can be done without just getting a new fridge. Back to you soon.
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With the unit unplugged remove the machine compartment and visually inspect for and burnt marks or frayed wiring. if non is seen, remove the wiring connectors from one component at a time and re test by plugging the unit back in. This will help you isolate the issue hopefully.
The machine compartment is on the back and the power cord is attached behind it. It is usually connected with 1/4" screws so a socket or nut driver will help you gain access.
Either the start relay in the compressor is grounding electrically or the defrost heater is (most likely start relay). To replace this yourself is difficult as it requires technical knowledge. If you are located in California, bay area I could help you personally
Ensure it fully dries out before trying it again. Water in the electrics will throw your trip instantly. If it's dry now, and you are having the same problem. check the electrics for a short circuit or earth fault. Usually a compressor earth fault is to blame.
The fan and defrost heater are run off the same relay on the board. When on defrost, the fan stops. when the fan starts, the defrost heater is switched off, Sounds like the neutral to the board may be shorting. If you have the ability, try powering the evaporator fan from the compressor relay, disconnecting from the board entirely. To see if this will work, just take a temporary wire to the fan when disconnected and see if it trips while running.
Sounds like the compressor is grounded out causing the breaker to trip, but it could also be wiring, but if I recall most things in those type of machines reduce down to 12vdc and that wouldn't blow the breaker.
It might not be the motor, it could even be the door switch, but first unplug the fridge, disconnect the wires from the motor, insulate them, switch on and see if your house power trips out. If the house does not trip out it is the motor. It is still trips out, look at the wires to the switch and the light and also the thermostat. Good luck and remember to unplug the wall socket whenever checking any circuit.
Pankaj, Do you have a ohm meter? Sounds like you have something shorting back. First take the meter to the cord. On the end of the cord, you should show no continuity from each male prong to the ground prong on the cord itself. If you show continuity, you have something shorting back. Then I would start with the compressor, Unplug the wires going to the overload and relay, make sure the units unpluged and meter the cord again. If it's ok, then the problem is in the overload and relay. Start there and let me know, if it still showing a short, then we will have to go to the controls, heater, and repeat the process until you find the culprit. Catriver.