Fridge doesn't work

What year truck? Do the blue lights inside the fridge light up?

 

If the light comes on with door open
Check cool dial, turning up and down. Feel for click somewhere along numbers.
Light will tell you it has power.... unless bulb is out. Click will tell you thermo sensor is functioning. Altho it can still be prob....
But all that will point to copressor being kaput
Tell shop.they can look at it

 

How many hours has it been running? Does the light in fridge come on?

 

I had a truck that had a switch by my apu controls for the fridge. Do you see something llike that?

 

If fridge light is working then fridge is getting power from inverter.

 

D'oh! lol

 

OP hasn't told us if his fridge light is working. He didn't say WHICH power outlets are working. My trucks had 1 or 2 120v outlets on the inverter and 1 or 2 120v outlets in the sleeper. IIRC, the power outlets on the inverter worked if the inverter was working. But there was a button or switch on/near the inverter that had to be turned on to power the 120v outlets in the sleeper. We don't have enough info from the OP, yet.

 

None of the trucks I have had ran the fridge off the inverter.

 

If its aftermarket, they may go with 120v model