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Old 08-18-2014, 10:52 AM   #1
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New to us Alpine 2004 34 FDDS

On a shakedown trip with new coach have question regarding the water heater. This coach was not used this year and, while the manual says there are two valves for the bypass, I can only find the one for cold water. The gas will ignite but only cold water comes out of the tap. Anyone know where the mysterious hot water valve might be?

We love the coach btw. Thanks for any help.
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Old 08-18-2014, 01:37 PM   #2
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One on top and one on bottom, inline, next to the intake and output ports right on the back of the water heater tank, under the cabinet. Another issue could be the check valve that lets cold water in the tank and hot water from tracking back thru the cold side. They are plastic inside and often break--when broke they prevent water water from going to the tank.....good luck, keep us posted....
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Old 08-18-2014, 03:02 PM   #3
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Sounds like you have the later version of the by-pass which only had one valve on the cold input as you describe. The hot outlet has a one-way valve fitted so in theory a second manual valve is not needed. However, there were issues with this valve failing causing no hot water so you may want to search back through previous threads to find more on this.
OK found the thread for you..Water Heater Bypass Valve Issue
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Old 08-18-2014, 05:35 PM   #4
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Thanks for the info. I'll probably wait until I get home tomorrow to take it apart. I suspect that the element is also toast because I connected the electric prior to the water and the switch had been left on with no water in the tank. I'll let you know how I make out.
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Old 08-18-2014, 05:39 PM   #5
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I am sure we have all been there with the electric element. Mine was rusted in solid so I finally replaced my water heater last year and now have electrically heated water as well as propane.
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Old 08-27-2014, 03:26 PM   #6
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Mocha Latte,

Hi and welcome to the Alpine Forum!

If you do a Google Search on "Surburban water heater service manual", you'll find a nifty pdf manual with great troubleshooting charts for both the gas side and the electric side.

Also, be aware that there are 2 switches to send AC electric power to your water heater. One is the circuit breaker in the panel just rear of your door to the toilet and the other is on the side of the water heater behind the removable side panel on the drivers side of the coach. I leave the switch ON on the water heater and turn the circuit breaker ON or OFF depending on whether we are using or storing the coach.

I replaced our electric element a while back and it was pretty easy. And, I regularly inspect the anode to see if it is ready for replacement. Check Amazon for these parts.

Cheers!
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Old 08-28-2014, 10:48 AM   #7
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Thanks for the info. I don't seem to be able to locate the circuit breaker panel you mention. The refrigerator is next to the door. Maybe I' m missing something. I managed to remove the check valve. It may have been stuck since this coach was not used this season by the previous owner. I cleaned it and put it back in. I've ordered a new element because I assume the one in place now is probably fried since the electric was on with no water in the tank.

This is my 5th used rv, and each time it takes a while to retrace the steps of the last owner. Once I get past that I'm looking forward to some great times. I have some other questions, but I'll post them in another thread.
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Old 08-28-2014, 12:01 PM   #8
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If is the same as mine the circuit breaker panel is behind a small door low down between the toilet and the bedroom.
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Old 08-28-2014, 12:27 PM   #9
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Found it! It was taped over in the off position which makes me suspect that the element is probably ok. Question: would that breaker left off, prevent the electronic ignition of the gas from happening?
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Old 08-28-2014, 01:43 PM   #10
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No. The gas side is 12v DC the element is 120v AC.
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