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Old 07-04-2016, 11:13 AM   #11
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APD,

Where is the relief valve? Is that the water heater drain on the outside of the camper? I have tried opening up the two water lines that go in and out of the water heater, while at the same time, turning the bypass valve off. That's when the water pump goes squirrely.

I tried posting a picture of the water leak. It's on the out line from the water heater. I'm going to try and fix that first and then check the drain to see if the water heatet is full.

Pretty sure my battery is dead. I charged it on deep cycle 2A all night and then hooked it up to camper again. I unplugged the camper power cord and no lights, no nothing from the battery.
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Old 07-04-2016, 11:15 AM   #12
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Originally Posted by michellep View Post
I hope someone corrects me if I'm wrong, but the furnace fan runs off 12V.
Ours runs on 12 volt DC. Battery when unplugged and converter when plugged into shore power.
I also figured they were all that way for dry camp operation.
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Old 07-04-2016, 11:20 AM   #13
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The relief valve will be a brass valve with a small lever on top. Located in the outside water heater cover. If you lift up on the lever it unseats the valve and water/air will flood out. Google it's location as a T&P valve or Temperature and Pressure relief valve.
Should look something like this:
AP12576G - Rheem AP12576G - Temperature and Pressure Relief Valve (T&P)

Release the lever after checking and it should re-seat.
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Old 07-04-2016, 11:26 AM   #14
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The furnace is 100% 12 VDC. You stated the battery was dead or almost. Before going any further make sure your battery is charged and not defective. A bad batt will cause all kinds of weird problems.
110 VAC in most units powers the A/C, microwave, TVs and the electric element in water heater. Everything else requires 12 v. The fridge will run on 110 but all controls are 12VDC.
So,make sure the battery is good before chasing other issues. With the water heater, get a new anode. Drain plug is the anode so replace it, but be careful removing the old one. Can ruin the threads on heater. I use NSF certified sealer for threads but Teflon tape works.
You should be able to disconnect the battery cables and plug in to shore power and have everything work. Remove and replace anode then double check the bypass valves. I had a BB size foam ball from manufacture in the filter on the output of the bathroom faucet cause issues that looked like pump problem. Assume nothing was maintained properly on a used unit
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Old 07-04-2016, 11:33 AM   #15
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About the battery.
Our little camper has a battery disconnect switch located near the convertor. I'm not sure if it's a factory item or was installed later. There could be one in your system.

Also there's a large fuse in the positive cable on our battery. If yours is so equipped it could be blown.
Might check all the fuses in the convertor cover as well. (You probably already have.)
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Old 07-04-2016, 01:47 PM   #16
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I sometimes have to remove the thermostat cover and snap it back on to get the furnace to kick in.
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Old 07-04-2016, 03:12 PM   #17
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Quote:
Originally Posted by APD View Post
Ours runs on 12 volt DC. Battery when unplugged and converter when plugged into shore power.
I also figured they were all that way for dry camp operation.
Yep, same here, in my FF the furnace fan is 12 vdc and operates on battery or converter 12 vdc if connected to shore power...
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Old 07-05-2016, 12:07 AM   #18
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APD,

Ah yes, I've played around with the relief valve when I first brought the camper home. I will try tomorrow.

Today I fixed the leaking water line with plumber's tape and tightened it all up. Tried opening up the lines and turned the bypass off. Same issue. But i narrowed down the noises coming from the water line going into the water heater. Going to add tape to all the joints there too.

Thanks.
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Old 07-05-2016, 12:18 AM   #19
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jtwcummins,

I charged the battery on deep cycle 2A last night for about 10 hours. I hooked it back up and checked the fuse. It was a bad fuse, so I replaced it. Now running on just battery everything that's supposed to, except the furnace, works. Not sure how to proceed with fixing the furnace. I bought a small space heater because it's been unseasonably cool up here (64F tomorrow and 50F overnight tonight).

What will replacing the anode/drain plug do?
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Old 07-05-2016, 03:48 AM   #20
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Quote:
Originally Posted by APD View Post
About the battery.
Our little camper has a battery disconnect switch located near the convertor. I'm not sure if it's a factory item or was installed later. There could be one in your system.

Also there's a large fuse in the positive cable on our battery. If yours is so equipped it could be blown.
Might check all the fuses in the convertor cover as well. (You probably already have.)

Good to know...I'll have a look for a battery disconnect switch near the converter. Also, yes the battery fuse was blown.
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