Fogatti tankless water heater - Ec code

[Jbird68]

I just had the 48,000 btu Fogatti water heater installed by an RV dealer. It works but I'm getting an Ec code and can't adjust the temperature settings or even turn it off at the display panel. An Ec code means there isn't enough propane pressure to light the pilot light. But it turns on and heats the water. I tried resetting the heater but I still get the Ec error code. I found out the both of my propane tanks were empty. I got new tanks and it still gives the Ec code. Anyone else have this issue?

[Jbird68]

I started looking at dual regulators on Amazon. Someone had commented that they had trouble with their tankless water heater until they replaced their regulator. Since our passport is 10 years old, maybe it's just time to replace the regulator.