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Hi my name is Robert...
Sounds to me the fridge could be in lock out mode for the LP side if the light is flashing. What happens when you try and run it on LP? Do you hear the electrode trying to spark? The electrode will be located under the outside access panel. My thinking is maybe when you had the propane filled some air got into the lines and is causing the fridge not to light on LP. Go to the main LP tank valve and shut the valve, slowly open it back up, sometime if the valve is opened to fast the regulator can lock up and you might not get the proper pressure. Try lighting the stove burners as well then starting the fridge on LP, need to know if the fridge will light off and if so if the flashing light will go away. On AC power it will take several hours for the fridge to properly cool off. Click HERE for a service manual, it should help some. Robert
What you might also be able to do is disconnect the 12 volt DC supply on the back of the fridge and then hook it back up to see if the light resets. The manual will show the DC supply wires.
Hi was just checking in to see if my answer helped? IF you have more questions or concerns please feel free to contact me.... Robert