1. Fins freezing up is NORMAL. The fin temp will be 10 degrees colder than the refer. So, if the refer is 36 degrees the fins are 26 degrees which will cause ice on the fins depending on the humidity.
2. Check light, You need to cycle the refer 7 to 10 times to remove any air in the LP line to the refer. The refer should light unless your burner is extremely dirty which should be cleaned.
3. What fuses on the front panel????? There are no fuses on the front panel
4. AS others have stated, if the flue cover is COLD. Starting on 120 and wait 1 hour. The flue cover will be warm/hot. If so the element is GOOD. No other testing of the element is needed. They either work or do NOT work. No middle ground. Doug