No power to refrigerator when plugged into shore power

[cattlejack]

Hello fellow engineers
I have no power to my refrigerator when plugged into shore power.
First step to look for is?
Than?

[joanfenn]

You checked the fuse?  Fridge is plugged in firmly to 110 outlet? 

[cattlejack]

yes, and yes, but today it decided to start working again.
What will happen is the refrigerator will stop working and give a fault code that means no shore power or not enough.  I've got at least and 18 gauge extension cord. 

[yellowrecve]

18 gauge is too small. You may not be getting enough volts at the fridge.

[TerryH]

10 or 12 gauge and as short an extension as possible. You also require stable 12 volts for the  mother board regardless whether running on 12v, 120v or propane.

[cattlejack]

OK , switch up to a 12 gauge cord, and moved the RV closer to the outlet.
So far, so good.  Will see, thanks