Fridge not working on 12v

Discussion in 'Fridges & Ovens' started by bartiny, Sep 10, 2015.

  1. bartiny

    bartiny

    Joined:
    May 23, 2010
    Messages:
    284
    Location:
    Accrington, Lancashire
    Ratings:
    +419
    Hi 'wizzards':)

    I have pics but they will not load (keeps saying error) :(

    Vehicle= 1996 Swift Royale 630 on a 2.5 td Peugeot Boxer base.

    As above, the fridge has stopped working on the vehicle 12v when the engine is running.

    Under the bonnet I (think) have found the relays x 2 leading to a fuse block and then into a loom.

    The large feeds (I assume to the fridge and???) from the relays are 1xBrown with blue stripe, the other is a lightish red with a yellow stripe.

    Then there are 2 smaller wires 1xBlue that goes down to the ignition light take off (well I think that is what it is, as the ignition light goes off when I remove it) on the alternator, and a small Black that goes to earth.

    I have cleaned all the connectors and put 12v accross the relays and all seems good.

    So my questions are, at last you say:LOL:,
    1 = Am I 'looking in the right place'?
    2 = what does the other relay do, as I assume you only need 1 for the fridge?
    3 = What rating/size/spec should the relays be?
    4 = Any other suggestions (no I can't afford another motorhome;))

    (y)
     
  2. jockaneezer

    jockaneezer Funster

    Joined:
    Dec 12, 2010
    Messages:
    2,078
    Location:
    Cumbria
    Ratings:
    +6,303
    Does the 'other' relay provide the alternator charge to the leisure battery ?
     
    • Like it Like it x 1
  3. bartiny

    bartiny

    Joined:
    May 23, 2010
    Messages:
    284
    Location:
    Accrington, Lancashire
    Ratings:
    +419
    That would make alot of sense, Thank you(y)
     
  4. bartiny

    bartiny

    Joined:
    May 23, 2010
    Messages:
    284
    Location:
    Accrington, Lancashire
    Ratings:
    +419
    Ok, does anybody know if the live wire (small blue) that switches the relays when the engine runs, should it go to the small take off on the alternator as it does now, or has it been wired wrongly?
     
  5. dave newell lvs

    dave newell lvs Trader-Vehicle Services

    Joined:
    Oct 31, 2008
    Messages:
    2,765
    Location:
    Telford, Shropshire
    Ratings:
    +4,229
    Thick brown blue is charging feed to leisure battery (thick brown green is from engine battery), thick red yellow is fridge supply when engine running, blue to alterantor is engine running signal to energise relays and thin blacks are earth for relay energising coils. Remove the fridge vents and if you can locate the red/yellow wire check if it has 13+ volts present with engine running ( use a good earth to chassis for your meter not the existing earth for the fridge as that may be the problem) if there is decent voltage present with engine running check the earth continuity. If that is ok then either the energy selector switch is at fault or the 12V element has failed.

    Common faults are corroded connections causing high resistance, these can be at the signal wire connection to the alternator/battery light wire (frequently made with a bodgelock), at the fuseblock connections, at any joints in the wiring (usually one near the engine battery in Swift vans) , at the fridge connections or at the fridge earth to chassis connection.

    Happy hunting, D.
     
    • Like it Like it x 3
  6. bartiny

    bartiny

    Joined:
    May 23, 2010
    Messages:
    284
    Location:
    Accrington, Lancashire
    Ratings:
    +419
    Perfect! thank you(y)
     
  7. Munchie

    Munchie Funster Life Member

    Joined:
    Jul 28, 2007
    Messages:
    8,753
    Location:
    Champagnac-La-Riviere
    Ratings:
    +13,802
    Ours was the same! Took bottom vent cover off fridge to expose fridge connections. Found a spade connector loose put it back tightened and all was well!
    Hope as easy for you.
     
    • Like it Like it x 1
  8. dave newell lvs

    dave newell lvs Trader-Vehicle Services

    Joined:
    Oct 31, 2008
    Messages:
    2,765
    Location:
    Telford, Shropshire
    Ratings:
    +4,229
    Double check the brown/blue and brown/green wires, I may have mixed up their respective batteries.

    D.
     
    • Like it Like it x 1
  9. pappajohn

    pappajohn Funster Life Member

    Joined:
    Aug 26, 2007
    Messages:
    31,094
    Location:
    YO11 2BD
    Ratings:
    +23,134
    Swap the two relays..left to right and right to left.
    They are both the same.
    Does the fridge work now
    If so you have a faulty relay
    It may activate and click but it doesn't mean it's making a contact.
     
    • Like it Like it x 1
  10. bartiny

    bartiny

    Joined:
    May 23, 2010
    Messages:
    284
    Location:
    Accrington, Lancashire
    Ratings:
    +419
    Thank you all for your help (y)
    I think that you have covered everything that I need to check, I will post back the results when I get to the bottom of it.
    :thanks3::thanks3::thanks3:
     
  11. bartiny

    bartiny

    Joined:
    May 23, 2010
    Messages:
    284
    Location:
    Accrington, Lancashire
    Ratings:
    +419
    All sorted now thanks,
    The little blue wire was only scotch blocked to the alternator wire and was corroded, so renewed the wire and run it down to the take off on the alternator.
    The fridge on/off switch was working intermittently, fitted new one.

    Thanks for the help (y)(y)
     
  12. dave newell lvs

    dave newell lvs Trader-Vehicle Services

    Joined:
    Oct 31, 2008
    Messages:
    2,765
    Location:
    Telford, Shropshire
    Ratings:
    +4,229
    Bodge locks, the bane of an auto electricians life. :)

    D.
     
    • Like it Like it x 1
Loading...

Share This Page