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qhumberd
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Norcold no heat coming off the vent…

Tross2023
Tross2023 Member Posts: 77
in Air Conditioning & Refrigeration
3 way norcold, 2018 320S almost perfectly level, shore power turned on, 20 amp breaker is not tripped, battery is new, and plenty of amps, 13.8 on the battery per the volt meter, after a few hours, no heat coming off the heat vent…certainly no cooling, yes frig set to coldest. 
TIA
2024 Hyundai Santa Cruz and 2018 T@B 320S
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Comments

  • MuttonChops
    MuttonChops Member Posts: 1,934
    Have you selected Propane (gas) or 120VAC Electric as your Fridge heat-source mode ?

    Does the Fridge display/control panel agree with an indicator light for your selected heat-source?

    '18 320 S,  pitched axle, 3020HE; PNW based
    TV: '17 Colorado V6 Z71 4x4, Tow Package, GM Brake Controller
    TV: '25 Canyon AT4
    Adventures:  58   Nights:  405  Towing Miles 50,180
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  • Tross2023
    Tross2023 Member Posts: 77
    Dear Mutton, i have selected shore power, the little green plug light is lit confirming my heat source…
    2024 Hyundai Santa Cruz and 2018 T@B 320S
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  • Denny16
    Denny16 Member Posts: 5,431
    Is the fridge cold?  I do not think you will get noticeable heat coming from the vent whilst running on AC shore power to cool the fridge.  B)
    The vents are mainly used when cooling the fridge with gas.
    cheers
    2018 TaB400 Custom Boondock,  Jeep Gladiator truck, Northern California Coast.
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  • Tross2023
    Tross2023 Member Posts: 77
    Not cold

    2024 Hyundai Santa Cruz and 2018 T@B 320S
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  • Denny16
    Denny16 Member Posts: 5,431
    Then it sounds like the fridge is not working on AC?  Check your control panel to make sure AC power is selected.
    Cheers
    2018 TaB400 Custom Boondock,  Jeep Gladiator truck, Northern California Coast.
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  • Grumpy_G
    Grumpy_G Member Posts: 710
    The basic function of the fridge is to use heat to generate a cooling effect through thermal phase change of ammonia from liquid to gas. So regardless of heat source there should always be some warmth/heat noticeable at the condenser. If the whole pipe contraption stays cold it means the heat source isn't working, simple as that. 

    In case of AC or DC power this could be the fuse/breaker has tripped or the heating element itself has failed. For propane mode the causes are a little more complex but the flame indicator will tell if gas mode works or not. 
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  • Tross2023
    Tross2023 Member Posts: 77
    Fuse/breakers are not tripped, i pulled and checked all fuses, breaker not tripped.
    2024 Hyundai Santa Cruz and 2018 T@B 320S
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  • Tross2023
    Tross2023 Member Posts: 77
    AC power selected
    2024 Hyundai Santa Cruz and 2018 T@B 320S
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  • MuttonChops
    MuttonChops Member Posts: 1,934
    Since the 120VAC Indicator Lamp is working (On) we know the Fridge is getting power and the 'Mode Selector' Knob is working.

    The most likely failure points will be:
      1 -  T-Stat (thermostat) unit or
      2 -  The AC Heaters itself

    Easiest method for isolating the failure point is to remove the propane stove top and measure the AC Voltages.

    Does the T-Stat Output { terminal 3 } have about the same voltage value as the input side { terminal 4 }

    If answer is No, T-Stat is bad
    If answer is Yes, Heater Element is bad or there is a wire connection issue between the T-Stat and Heater.


    '18 320 S,  pitched axle, 3020HE; PNW based
    TV: '17 Colorado V6 Z71 4x4, Tow Package, GM Brake Controller
    TV: '25 Canyon AT4
    Adventures:  58   Nights:  405  Towing Miles 50,180
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  • Tross2023
    Tross2023 Member Posts: 77
    THAT is a great answer, thanks…
    2024 Hyundai Santa Cruz and 2018 T@B 320S
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  • Tross2023
    Tross2023 Member Posts: 77
    So, no heat detected from the Norcold outside vent, no sign of any heat from 12v, 110AC, nor propane…Suggestions?
    2024 Hyundai Santa Cruz and 2018 T@B 320S
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