My wife and I and four small dogs are on third day of our initial "shake down/familiarization" trip.
So far so good but no hot water from Girard GSHW-2 tankless water heater.
Chasing that this AM.
Our first RV and it is a Quantum KM24 on Mercedes Sprinter chassis.
No sir, shore power and water.
Turned out to be a water pressure problem.
Instant hot water needs a certain pressure to activate.
A call to Thor advised to open two hot faucets.
Did so and hot water.
Why that helps I do not know but it did.