I have a new to me, 2010 Newmar Dutch Star 4369. It comes with an on-demand tankless water heater. It has been parked the past week, hooked up to a 30 amp service. I have had both the electrical and propane switches to the water heater turned off. Just for the heck of it I turned on the hot water at a faucet and got...hot water. How does that work?

Does it have an Aquahot system? Could be from that

Mr. Bob, I would think that if you want it truly off, you need to flip the breakers for it. I assume that when you say 'switches' that you are just talking about the 'on/off' switches.I have a tankless water heater for our shower, I have to turn the breaker off for it not to heat. We also have an electric hot water tank that us sufficient for us if I need to watch electric power. The 'tankless' will pull some amps.Safe travels,MM.

1. You need to post the BRAND and model number of the Heater. Newmar used Oasis for LP and 120 heating2. Did you start the chassis engine and run it at anytime before you checked the faucet? Oasis has a engine heat option and that will heat the tank if the engine has run long enough to get to operating temp. Doug

By that year Dutch star should have a standard oasis diesel hydronic heat shouldn’t it ? I guess you could call it tankless but not boiler-less. Don’t have a oasis but lots of info ( google) if you have that. My Aqua hot heats by the engine , diesel or electric and because it’s well insulated keeps “warm” water for hours. It’s not tankless as mine has a 15 gallon boiler the coiled hot water line runs through (around in my case)

bobkatmsu wrote:I have a new to me, 2010 Newmar Dutch Star 4369. It comes with an on-demand tankless water heater. It has been parked the past week, hooked up to a 30 amp service. I have had both the electrical and propane switches to the water heater turned off. Just for the heck of it I turned on the hot water at a faucet and got...hot water. How does that work?You answered your own question. Obviously the "on-demand" system is still on and responding to your demands.Chum lee

How do I have hot water? | Good Sam Community

23 Replies

dougrainer
Nomad
Mar 24, 2018
1. You need to post the BRAND and model number of the Heater. Newmar used Oasis for LP and 120 heating
2. Did you start the chassis engine and run it at anytime before you checked the faucet? Oasis has a engine heat option and that will heat the tank if the engine has run long enough to get to operating temp. Doug
Mr_Mark1
Explorer
Mar 24, 2018
Mr. Bob, I would think that if you want it truly off, you need to flip the breakers for it. I assume that when you say 'switches' that you are just talking about the 'on/off' switches.

I have a tankless water heater for our shower, I have to turn the breaker off for it not to heat. We also have an electric hot water tank that us sufficient for us if I need to watch electric power. The 'tankless' will pull some amps.

Safe travels,
MM.
Ranger_Smith
Explorer
Mar 24, 2018
Does it have an Aquahot system? Could be from that

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How do I have hot water?

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