We have the ProPlus iN.Command model. It is hard to tell that the generator "prime" function is working...it might actually be working and you just can't tell from inside the RV.
- Step outside the trailer and stand over on the curb side close to the generator. Wait for some "quiet time" - no vehicles passing, etc.
- Hold down the "prime" button for a minimum of 10-20 seconds. It takes this long for iN.Command and the generator to sync.
- You should hear a reasonably soft sound (like a small electric pump) when prime occurs.
- Now try to start the generator.
iN.Command should run the prime but it takes 10 seconds or so to initiate and you will not be able to hear it from inside the RV. On ours, I believe the color of the "Prime" button ultimately changes on my phone once initiated. I've talked to ASA and as I recall, the iN.Command prime function initiates for 10-15 seconds.
If that doesn't work and you want more information, recommend you give us the age & model of trailer and more importantly the model of the iN.Command controller.
Hope that works for you.