LG Fridge / Freezer works intermittently

Home › Forums › Public Support Forums › Help And Support › Fridge And Freezer Forum › LG Fridge / Freezer works intermittently

Viewing 13 posts - 1 through 13 (of 13 total)
  • Author
    Posts
  • March 1, 2017 at 12:53 pm #90719
    b0at98
    Participant

    Hello, we have an LG GR359SQ no frost fridge / freezer, over 12 years old, always been very reliable but stopped freezing and chilling recently, condensor wasn’t running. We tested the PTC relay for continuity, decided it needed changing, bought a new one, fitted it, plugged the fridge back in, no joy. Unplugged it and plugged it back in straight away and the condensor kicked in. A few hours later, we have ice cubes, all good. Next morning, everything has defrosted. Could it be a faulty relay? How can we test it if it works intermittently? Might the relay be incompatible even though it looks identical? Is there anything else it could be? Penny for your thoughts please.

    March 2, 2017 at 11:43 am #445742
    kwatt
    Keymaster

    Re: LG Fridge / Freezer works intermittently

    Is the compressor running hot?

    K.

    March 2, 2017 at 2:06 pm #445743
    b0at98
    Participant

    Re: LG Fridge / Freezer works intermittently

    Hi, the compressor’s not running at all now so cannot tell if it was overheating. There is no continuity in the new relay on any pair of pins (very low reading, no beep on the multimeter). So presumably the new relay is faulty? Could there be something else wrong with our fridge that kills the relay?
    Thanks

    March 2, 2017 at 2:10 pm #445744
    kwatt
    Keymaster

    Re: LG Fridge / Freezer works intermittently

    b0at98 wrote:Could there be something else wrong with our fridge that kills the relay?

    Yes, the compressor.

    K.

    March 2, 2017 at 2:17 pm #445745
    b0at98
    Participant

    Re: LG Fridge / Freezer works intermittently

    Doh!!! Is there a way of testing whether the compressor is faulty?

    March 2, 2017 at 2:36 pm #445746
    kwatt
    Keymaster

    Re: LG Fridge / Freezer works intermittently

    Metering it out is about it really along with checking for earth leakage.

    K.

    March 2, 2017 at 2:43 pm #445747
    b0at98
    Participant

    Re: LG Fridge / Freezer works intermittently

    How does the compressor kill the relay? Thanks.

    March 2, 2017 at 2:44 pm #445748
    kwatt
    Keymaster

    Re: LG Fridge / Freezer works intermittently

    If it’s shorted or short cycling it’ll blow it.

    K.

    March 3, 2017 at 8:11 am #445749
    b0at98
    Participant

    Re: LG Fridge / Freezer works intermittently

    Morning! We had someone look at the fridge. (They happened to be fixing the washing machine under warranty) Apparently the relay on the PCB needs replacing and there was nothing wrong with the PTC relay afterall. Which is confusing as we thought we were testing correctly by looking for continuity in any pair of pins. What did we do wrong? We need to know the old PTC relay works to send the new one back (paid €50 for it, we live in France). The next problem is we can’t find the PCB relay, JW1aFHN DC12V. Is there an equivalent that would work? Thank you

    March 3, 2017 at 9:10 am #445750
    electrofix
    Moderator

    Re: LG Fridge / Freezer works intermittently

    why cant you find the relay seems to be a popular one

    http://uk.farnell.com/panasonic-electri … eated=true


    all I did was to put JW1aFHN DC12V into google
    Dave

    March 3, 2017 at 9:53 am #445751
    b0at98
    Participant

    Re: LG Fridge / Freezer works intermittently

    The part number on that link is different. The only in stock relay with the same part number is a used item from the US

    March 3, 2017 at 9:55 am #445752
    kwatt
    Keymaster

    Re: LG Fridge / Freezer works intermittently

    All the original parts for it from LG are obsolete, completely unavailable now.

    No shock there.

    K.

    March 3, 2017 at 12:18 pm #445753
    electrofix
    Moderator

    Re: LG Fridge / Freezer works intermittently

    To be honest any 12v relay with the same spec will work. Each manufacturer of relays has their own numbering scheme but if it’s the right coil voltage and current rating will be ok As long as it physically fits the board Dave

  • Author
    Posts
Viewing 13 posts - 1 through 13 (of 13 total)
  • You must be logged in to reply to this topic.