Tankless Heater Temperature Swings Troubleshooter

Question 1

Is the hot water more stable when you switch from city water to the RV pump?

Is the shower pressure weak or does the burner cycle on and off?

Are you mixing in a lot of cold water at the shower handle?

Do other propane appliances seem weak or inconsistent?

Is there propane smell, flame rollout, burnt wiring, or active leaking?