Kayteg1 wrote:
In my previous RVs I liked to travel with propane off at tanks as safety measure.
The older fridge models had manual switches that when I opted for 120v from inverter - they would stay or die on this mode.
Motorhomes had bigger charging wires, so running fridge for couple of hr on house batteries, still would recharge them when I continue driving later.
Now I would like to do the same on TC and having built-in inverter on my truck, would be nice to take advantage of it and secure 120V cable from truck directly to the fridge plug.
My dilemma is the computerized system, that when I stop at gas station and turn the truck off - in lack of 120V the computer will start sparking the igniter and with lack of propane it will spark for a while.
That brings safety concern at gas station as well.
So for those who are good with computer controls - how to override the propane option and let the fridge go off or into 12V mode when 120V turns off?
Upgrade to a lift gate plug for your 12 volt +/- coming from your alternator so you have #4 wire going all the way back and install the inverter in the camper as a permanent fixture.
Setup a two way two pole throw switch that connects the outlet either to the inverter or to the camper's internal 110volt circuit and put a small circuit breaker box in with a 15 amp breaker so that the fridge still has circuit breaker protection.
Now, you can leave the fridge going, no worries about it trying start the ignitor and your batteries are getting enough current from the alternator to charge while powering the fridge off the inverter.
