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Batalnaker's avatar
Batalnaker
Explorer
Aug 17, 2019

Norcold N305x indicator lights not working

I have a norcold N305x in my RV that seems to be working properly on both propane and electric however neither indicator is working. When on propane the flame ignites without issue, stays lit for an indefinite amount of time, the ammonia coils in the back are warm, and the fridge stays cold, however the white to green propane indicator never moves. I was assuming it was a thermocoupler problem but it's my understanding that would make the flame go out also. When the fridge is on AC power the ammonia coils are warm and the fridge stays cold however again the indicator light does not come on to show it is working. I have verified AC and DC power to the fridge and all fuses are good. Any ideas???

1 Reply

  • AC Indicator....bad bulb
    AC Indicator hot (black wire) comes off the AC Thermostat switch ...same place AC heater gets power
    AC Indicator nutral (white wire) goes dirctly to terminal block...same place heater neutral goes to



    DC flame meter is a function of thermocouple
    Blue wire to selector switch goes to Flame Meter
    Red wire from Flame Meter goes to ground connection on AC thermostat Switch
    You know thermosouple is working cause gas vlave is staying open otherwise it woud trip if thermocouople wasn't generating current

    See pg 13
    N305 Manual