No need to pull fridge out to replace electric heater element
Electric heating element is in a tube on side of flue above gas burner area.
There is a 5A fuse for heater circuit inside power module (lower left side in outside compartment)
Here is a service manual for your model.....pg. 11 details how to replace element
LINKPropane may take a while to light cause you haven't used it and there is no current demand on LP Regulator
Make sure propane is valved in service
Then light off stove top burners on high to get propane flow established and a demand on regulator so it is functioning
Then try lighting fridge off on propane.....may take several attempts.
Fridge is level and has been level when operating.....correct?