I have a question about black tanks in my forest river 3901 fifth wheel.
I apparently have (2) black tanks.
How does the second one come into play? Is it for a washer hook up or does it take an overflow when the first one is full.
I have no info telling me.
I have a Crusader fiver. My panel has a switch labeled Black 1 and Black 2 but only have one black tank. The switch for Black 2 always shows full and Black 1 shows what is in the black tank.
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Hank, Dianna and two fur babies Cody and Bella
2016 F250 PSD CC/SB
2018 Crusader 338RSK
Then you only have one black tank. See which does not fill up on the panel when you use the camper. You can tape or paint over the marking so you do not become confused.
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2012 Wildcat Sterling 32RL, Gladiator Qr35 ST235/85R16 Load rating G, TST 507 TPMS w/ Flow-thru Sensors & Repeater, Reese Sidewinder 16K Pin Box, PI EMS HW50C
2009 Chevy Silverado 2500HD CCSB LTZ Diesel, Fumoto Oil Drain Valve, Turbo Brake activated, 39 gal Aux Tank W/ Fuel Pump transfer, Air Lift Loadlifter 5000 air bags.
I have a friend with a CC which has two black tanks because it has two bathrooms. There are two black tank flush inlets. There are two gray tanks also of course. There's one sewer drain pipe, though, and only one black tank handle.
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"Next to prayer, fishing is the most personal relationship of man" Herbert Hoover
"American by Birth, Southern by the Grace of God"Lewis Grizzard
FROG AR-0019-242
2016 GMC Denali 3500Dually--2017 CC 36CKTS
One of the ways Forest River saves money is to have one control panel which it uses in multiple models. Our Coachmen Brookstone only has one black tank but control panel shows two. Only one will light up as you start to use it. Then you will know which to ignore. Our Cade tank one is real and two is the non existent one.
One of the ways Forest River saves money is to have one control panel which it uses in multiple models. Our Coachmen Brookstone only has one black tank but control panel shows two. Only one will light up as you start to use it. Then you will know which to ignore. Our Cade tank one is real and two is the non existent one.
I have lights on both which leads me to believe there are 2 tanks
There doesn't have to be anything in a tank to get one light. We don't use our fresh water tank and actually have the drain cap off. (so I know it's empty) We still get a single light on the panel.
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You can avoid reality, but you cannot avoid the consequences of avoiding reality – Ayn Rand
There doesn't have to be anything in a tank to get one light. We don't use our fresh water tank and actually have the drain cap off. (so I know it's empty) We still get a single light on the panel.
Yes, I proposed that in post #18.
Quote:
Originally Posted by Mr. Dan
OK, now I'm GUESSING again (and maybe an RV control board expert will jump in) but I'm guessing the bottom light for any function will burn merely because that light is in the control board - even if there are no sensors in the trailer that would light the top three lights. Your statements "We had four lights on the tank that i call #1
We have always had one light on the #2 tank." make me GUESS you have sensors in tank one and they are hooked to the control board BUT that you have NO tank 2 (nor sensors for it). My "final answer" is that you have one black tank.
This quoted post also gives his answer to the question I asked just before your post. I'm going out to mow the back 40.
Peace.
Thank you Mr. Dan for your superior knowledge and attitude.
If you read your own post #9 you said there would be NO light
And I read his post #9 to mean he would not see MULTIPLE lights. He did use the plural. Maybe everyone's high horse needs a break
This thread became tiresome as the OP seems to have no interest in running some simple tests to figure this out for himself. The rest of us can guess till the cows come home and never be sure
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Scott and Liz - Southern NM
2012 Wildcat Sterling 32RL - w/level up (best option ever)
2007 Chevy 2500HD Duramax
Reese Fifth Airborne Sidewinder
Thank you Mr. Dan for your superior knowledge and attitude.
If you read your own post #9 you said there would be NO light
Actually, I said GUESS and guessing. I quoted here for you to re-read.
Quote:
Originally Posted by Mr. Dan
It is my GUESS that your unit has a control panel that's common to several trailers including some with 2 black tanks (probably with 2 toilets). Can't say for sure... but I'm guessing you'll never see lights come on for one of the black tanks.
The way these sensors are wired, pressing the appropriate button (tank or battery) will light the bottommost LED to show there is continuity in the circuit. It means "E" or empty when a tank button is pressed, and "L" for "Low" (LED will be on until battery voltage drops to less than 6 volts) if "Battery" is pressed. (FYI a battery is considered "dead" below 10.5 volts so NEVER wait till the "F" - "Fair" or 11.6 volt light goes out to recharge).
The graphic is for a different "style" of panel, but the function and troubleshooting is the same for all MicroMonitor tank/propane/battery systems when dealing with holding tanks and battery.
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Lou & Freya the wonder dog
2008 GMC Sierra 3000HD Allison Duramax
2019 Flagstaff 8529FL
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