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Old 09-16-2021, 02:41 PM   #1
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Water heater operation question

Just purchased a 2021 PUMA. I was told the water heater is gas/electric. I opened the cover today and the unit it too hot to touch. Switch on wall panel is off, gas is off at tank.
I have had the camper plugged into a 30 amp service for about a month while not in use. No water connected to camper.
My questions: Is the water gas/electric, or is it only electric? Does the water heat all the time the camper is plugged in? What exactly is the "Water Heater On/Off" switch on the wall panel for? Does the switch turn the heater to electric? By turning on the switch, am I turning on electric or gas?
I have used the camper only twice. I never turned the "Water Heater" switch on, and I had hot water for the entire trip.
I have had two campers previous to this one, but both had gas only water heaters. I could hear the gas heaters ignite and burn, but I have never heard any such sound in this unit. I would rather use electric as it's "free" with the campsite, and I can save the gas for cooking/heating.
I have also noted that if I turn the Water Heater switch to "on," the DSI FLT light comes on as well.
Not quite sure I understand everything I know about this thing!
Heading out tomorrow for a week long trip.
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Old 09-16-2021, 02:54 PM   #2
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It is a gas/electric. Look for the electric switch in the tank compartment it is usually hidden up towards top of tank. If you have the camper plugged in unplug it and wait to see if water cools then go in and hit the hot water switch make sure gas is turned on and air bleed out of the system. Later RJD
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Old 09-16-2021, 03:47 PM   #3
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Red switch inside is for gas operation of water heater.

Electric operation switch is inside the water heater compartment accessible from the outside. It will say On/Off

Did you drain your hot water heater from your last usage? If not then your water heater should be fine. But you should remove the anode (Located middle bottom of compartment) once the water cools down and inspect it.
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Old 09-16-2021, 04:26 PM   #4
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Quote:
Originally Posted by aceinspp View Post
It is a gas/electric. Look for the electric switch in the tank compartment it is usually hidden up towards top of tank. If you have the camper plugged in unplug it and wait to see if water cools then go in and hit the hot water switch make sure gas is turned on and air bleed out of the system. Later RJD
On Suburban water heaters the outside switch for electric operation is on the lower left corner of the tank, behind and below the gas control valve.
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Old 09-16-2021, 06:19 PM   #5
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hot water heater

make sure water flows from hot side of a faucet. heating element will take a couple of seconds to come on. it will hake a hissing noise. turn off switch under gas tube if no more hot water is needed.my puma was new and heating ement was burnt up.
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Old 09-17-2021, 03:06 PM   #6
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Umm...

Quote:
Originally Posted by aceinspp View Post
It is a gas/electric. Look for the electric switch in the tank compartment it is usually hidden up towards top of tank. If you have the camper plugged in unplug it and wait to see if water cools then go in and hit the hot water switch make sure gas is turned on and air bleed out of the system. Later RJD
Umm...If your water heater is a Suburban SW series (very common) the electric switch is accessed by opening the outside door and operating the switch at the LOWER left corner, hidden behind the air tube.

(Unless, of course, your water heater is mounted upside-down like RJD's!)
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Old 09-17-2021, 03:14 PM   #7
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Electric water heater ON/OFF switch

Get on your knees and look on the back wall of your water heater and you’ll see the switch there. It’s small, and contrary to normal switches, DOWN is ON and UP is OFF……just to mess with your mind.

See arrow in photo here………
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Old 09-17-2021, 07:24 PM   #8
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An additional note with this Suburban water heater you can run the electric and gas heating elements at the same time for a quicker recovery!
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Old 09-18-2021, 08:12 AM   #9
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You said you just bought the camper. Did you or the dealer put water in the tank. Be sure the by pass valve is not on and maybe you are not get any water into your water tank.
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Old 09-18-2021, 08:29 AM   #10
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If you are perhaps new to the RV world, we have put together a thread that has links to many of the more common things that you may need to know...including the switches and operations for the propane and electric heating element on a Suburban brand water heater (which is what you have).


You can find all of this at this link. Hope it helps.


https://www.forestriverforums.com/fo...ts-157524.html
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