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needrvhelp's avatar
needrvhelp
Explorer
Apr 15, 2015

Dometic DM2652 - No Power - Stumped - Everything Seems Fine

Got a new horse trailer with LQ - has this fridge in it. Picked it up and it worked fine when I was at dealer. Drove 3 hours now no lights at all will come on, won't cool in AC or propane.

Checked 12V and there is 12V and 120V working fine. Checked continuity of all fuses on circuit board and main board of trailer. All fine.

I am completely stumped what could be wrong... Seems all the power and fuses are working fine.

Thanks for any help.
  • newman_fulltime's avatar
    newman_fulltime
    Explorer II
    Apr 16, 2015
    Chances are the fridge was left on auto and when electric was disconected tried to light but bottles were off so went into lockout. T
  • louiskathy's avatar
    louiskathy
    Explorer
    Apr 16, 2015
    in the back of our fridge is a vent to the outside... open that vent from the outside (if you have one) and look for a small plastic black box. There's a little fuse in that box... check it.
  • dougrainer's avatar
    dougrainer
    Nomad
    Apr 16, 2015
    LOOK at the Burner flue cover. You will see a small round Thermal Snap disc with 2 red wires going to it. IF that snap disc has failed, you will not have 12 volts to the control board of the refer. There should be 12 volt positive on BOTH wires at the snap disc. If one has 12 volts and the other does NOT, then the snap disc needs replaced. Doug
  • MEXICOWANDERER's avatar
    MEXICOWANDERER
    Explorer
    Apr 16, 2015
    Do not forget the negative side of the circuit. I have worked on some that have circuit board negative insulated from refrigerator chassis negative.
  • needrvhelp's avatar
    needrvhelp
    Explorer
    Apr 15, 2015
    Incoming DC is there and I think it was J4 or J6 across there is 12V as well.
  • enblethen's avatar
    enblethen
    Nomad
    Apr 15, 2015
    Did you check on the incoming terminals for 12 volts DC?
    Fuse in 12 volt DC distribution panel could be bad. Normally located next to 120 volt AC circuit breakers behind metal plate held in place with thumb screw.
  • needrvhelp's avatar
    needrvhelp
    Explorer
    Apr 15, 2015
    I pulled upper panel and everything is secure. Is there a way to check if that's getting power? On lower circuit board all fuses have continuity (3A & 5A). Can't find any loose plugs at all.


    Could the circuit board have gone bad even though it's brand new?
  • Old-Biscuit's avatar
    Old-Biscuit
    Explorer III
    Apr 15, 2015
    No light on upper panel and you verified you have 12V DC to control module and that fuses on board are good????

    Then cable from lower board to upper panel is not fully plugged in or is broken

    Pull upper panel and check

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