First time owner. Have tankless water heater. How do I de-winterize the RV?

generic code for thermistor (temp sensor).

E1 Error Code This is an error on the thermistor. For instance, if your EcoSmart tankless water heater unit is displaying this E1 error code, it shows that you are being notified of the EcoSmart inlet thermistor that is not reading the proper temperature.Sept 22, 2021

Troubleshooting EcoSmart Tankless Water Heater Error Codes

Question edited to merge both your posts into one.
Question moved to RVS.

Here is the manual for your RV. There are 94 mentions of the word 'heater', and they all refer to the tankless water heater. I wonder if your is an aftermarket add-on? Phone them up.
https://tiffinmotorhomes.com/pdfs/manuals/2011_Phaeton_Owners_Manual.pdf

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Question edited for clarity - two/to
Question moved to RVs.

Videos tend to be generic, but the steps are the same on all RVs, remove water from anywhere that can freeze..

https://www.google.com/search?q=steps+to+winterize+Winnebago+26RK+Travel+Trailer

and de-winterize

https://www.google.com/search?q=steps+to+de-winterize+Winnebago+26RK+Travel+Trailer

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The placement of the power centre and water heater valve in a 2005 Coachmen Freelander motorhome may differ based on the particular model and floorplan of your RV. Nevertheless, I can offer you some general details on where these parts are usually located and how to use them.

RV Power Center:
The power centre in a recreational vehicle (RV) typically contains the electrical distribution panel, fuses, and circuit breakers. It is usually situated within the RV, often in a cabinet or utility area.

• Search for a panel that has a door or cover that can be opened. Inside, you will discover the circuit breakers and fuses that regulate the electrical systems in your RV.
• To activate or reset circuit breakers, locate the one that corresponds to the specific area of the RV you wish to power, and switch it to the "ON" position. If a circuit breaker trips, it will be in the "OFF" position, and you will need to reset it by moving it to "ON."

Water Heater Valve:

• The water heater valve for an RV's hot water system is usually located near the water heater unit itself, which is often found in an exterior access compartment.
• You'll typically need to access the water heater compartment by opening an exterior access panel or door on the side of your RV. The water heater will be a rectangular or cylindrical unit.
• Once you locate the water heater, look for the water supply lines connected to it. You should find a bypass valve system nearby that allows you to control the flow of water into the water heater.
• The valve positions may vary depending on the RV, but in general, there are typically three positions: "Normal," "Bypass," and "Winterize." To use the water heater, you'll want to set the valves to the "Normal" position. In the "Bypass" or "Winterize" positions, the water heater is either bypassed or prepared for cold weather storage.

Conclusion.
Different models and years of RVs may have variations in the location and functioning of these components. To obtain accurate instructions for your Coachmen Freelander model, it is crucial to refer to your RV's owner's manual. If you have any doubts about any aspect of your RV's systems, it is advisable to seek help from a professional RV technician or contact the manufacturer's customer support.

Locating the water heater bypass on a Forest River RV, specifically the Forest River Georgetown 398 model, can vary based on the specific layout and design of the RV. However, in most RVs, including Forest River models, the water heater bypass valves are typically located near the water heater unit itself. Here are some general steps to help you locate the water heater bypass on your Forest River Georgetown 398:
1. **Identify the Water Heater Unit:**
- The water heater in your RV is usually located inside a cabinet or compartment, either inside the RV or accessible from the exterior.
- It is commonly found in the kitchen area, bathroom, or an exterior compartment.
2. **Access the Water Heater Compartment:**
- Locate the compartment where the water heater is installed. This could be inside the RV or in an exterior storage compartment.
- Open the compartment door to access the water heater.
3. **Look for the Bypass Valves:**
- Once you have located the water heater, look for the bypass valves near the water heater unit.
- The bypass valves are used to redirect water flow during winterization or maintenance to bypass the water heater.
4. **Check Behind the Water Heater:**
- In some cases, the bypass valves may be located behind or on the backside of the water heater unit.
- You may need to remove a panel or access door to reach the bypass valves.
5. **Identify the Bypass Valve Configuration:**
- The water heater bypass system typically consists of three valves: a cold water valve, a hot water valve, and a bypass valve.
- The bypass valve should be set to bypass the water heater when winterizing the RV or performing maintenance.
6. **Consult the RV Manual:**
- if you have one, refer to the owner's manual or documentation provided with your Forest River Georgetown 398 for specific information on the location and operation of the water heater bypass system.
If you are unable to locate the water heater bypass valves or have difficulty accessing them, it may be helpful to consult with a Forest River dealer or RV service center for assistance.

An RV owner's manual wouldn't provide help with your issue. If you look for the make and model of your water heater, you'll find operating and service manuals. Your water heater has it's connections on the back of the tank, unless you can access from beneath or behind step one might be to remove the water heater.

Go to an RV parts store for a winterizing bypass kit for the water heater. Use POTABLE RV antifreeze and follow the instructions on the bottle. Drain all the water out of the water tank. Install the bypass kit on the water heater if it doesn't already have one. Put the water heater in the bypass mode. Add the antifreeze to the water tank. Open every water faucet including the shower head one at a time until antifreeze is present. Do this for hot and cold on every faucet. Once that is done, turn off the water pump and open all the faucets. That's all there is to it. Rember... DO NOT use automotive antifreeze. It will kill you.

ok, been a while so lets ee if I can get this all down.

1 - Drain water from your holding tank and remove drain plug in hot water heater. Drain holding tanks ( Waste )
2- turn on bypass for hot water heater ( instruction if needed )
3 - Get yourself some winterizing fluid ( can't remember exact name ) from your local Dealer . 2 or 3 gallons should be good
4- Poor this fluid into your water rez tank. All of it
5 - now go around to EVERY tap in your trailer ( one at a time ) and turn on cold water until water runs pink ( or what ever colour fluid you bought ) Close faucet them do the same for hot water tap. Repeat this at every faucet. Even the ones outside if you have any.
6 Don't forget to flush toilet in water runs pink.
7. Ensure all gas vales have been turned off ( tank vales included )

If you did everything right you should be good to go.

Plz double this list to make sure I covered everything

Pull bottom plug out of hot water heater tank let all water drain. Then open all water tank drain valves and be sure your RV is tilted so it will drain towards the valve. Go in RV access water heater valves put it in bypass so no antifreeze can enter water heater tank. Pump RV antifreeze with hose provided into all water lines throughout RV by turning on your main water pump after you have stuck the bypass hose in a new and full antifreeze bottle, then flush toilet until red antifreeze comes out. Open all faucets one at a time until red antifreeze comes out. I use 3 gal but some only use one, the more the better it’s cheap at Walmart. Don’t forget to run outside shower until red antifreeze comes out also, very important or it will crack in the cold. Finally make sure black and grey tanks are empty and flushed at your last camp trip before winterizing. Pour antifreeze in toilet and all drains making sure first that black and grey tank shut off valves are pushed in and closed. Get a quality cover and store RV, it makes a huge difference on protecting roof and roofs lap sealant! All RV antifreeze is non toxic and you just drain it all at your first camp stop after winter! Note: don’t forget to put water heater ionizer drain plug back in wrapped with new white Teflon tape and take water heater valves out of bypass! Draw a diagram of regular mode and winter bypass mode so you don’t forget especially hot and cold water heater blender valve between the two MUST be shut off after you unwinterize
or you will cool your hot water unwanted and have no hot water to use! Happy Camping folks!