Refer problem on AC

[Fred420]

OK.............We got struck by lightning  :eyecrazy:  while flying at the Radio Control Nationals in Muncy, IN. last month.  It fried the converter on the 12v side, the 110v ac side was still good. So I replaced it with a new, upgraded replacement unit. The 30amp pedistal where we were plugged into lost the breakers and I also fried the GFCI in our pop-up. That has been replaced and properly wired back up. There is 12v to the battery and all circuits and 110v to all of the outlets. The AC unit runs and the condinser comes on and cools well.

The problem is that I am unable to cool the refer on AC. I left it on for 3 days and the coils did not even get warm. It will cool on DC and gas. This is a Norcold unit. Is it possible to have lost the AC heater and the DC heater is still OK? I have 118v at the ac plug for the refer, and the 3 amp fuse is good

[PattieAM]

Considering the amount of a surge created by a lightning strike, and the other 12-volt damage you had, most likely some component in your fridge may have been fried also......BUT, PLEASE REMEMBER THAT THE 12 VOLT SETTING IS ONLY TO 'MAINTAIN' TEMPERATURES OF YOUR FRIDGE - NOT TO COOL.  Use either your propane setting or 120-v setting to cool your fridge.  Propane setting is more efficient with more BTU's generated, followed by the 120-volt setting.

[coach]

I would assume the 12v heater is different from the 120v, but that is just an assumption (maybe not see below!)

As to cooling under various energy sources. This link Dometic RM2193 parts list show 115 watts on DC and 115 watts on AC. 293 BTU low and 635 BTU hi - gas. 693 BTU/hr is ~ 186 watts (bet each model is different). Wonder how much of each actually is used and doesn't go up the chimney?

If you look at the last page of the link, there seems to be a heating element battery and a heating element power.