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04-15-2018, 08:03 PM
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#1
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Junior Member
Join Date: Jul 2017
Posts: 20
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Black water tank.
Black water tank always reads empty. Any suggestions on how to fix.
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04-15-2018, 08:15 PM
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#2
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Site Team
Join Date: Mar 2014
Location: Grayson County, Texas
Posts: 21,587
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My guesses:
1. lead on the "ground" sensor is not connected at the tank or
2. something's not connected in the level indicator panel.
How much would you guess is in the black tank?
Do other tank levels read what you believe to be correct readings?
__________________
2015 FR Wildcat 295RSX / GMC Sierra
Nights Camped: '13 = 49/'14 = 74/'15 = 74/'16 = 85/'17 = 110/'18 = 111/'19 = 86/'20 =108/'21 = 115/'22 = 135/'23 = 78; Booked for 2024 = 69
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04-15-2018, 08:50 PM
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#3
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Junior Member
Join Date: Jul 2017
Posts: 20
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Thanks for your reply Mr Dan.
The black water tank is the only one that doesn't register anything. Funny, my galley water tank never reads empty even after flushing. I did open up the panel and all the wires seem to be intact.
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04-15-2018, 08:53 PM
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#4
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Senior Member
Join Date: Jun 2012
Posts: 10,907
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Quote:
Originally Posted by KirkT
Thanks for your reply Mr Dan.
The black water tank is the only one that doesn't register anything. Funny, my galley water tank never reads empty even after flushing. I did open up the panel and all the wires seem to be intact.
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The level sensors are notoriously crappy (no pun intended) and not to be trusted.
If you don't find something obvious and it's a new unit under warranty, take it back to the dealer.
__________________
1988 Coleman Sequoia - popup (1987-2009) - outlasted 3 Dodge Grand Caravans!
2012 Roo19 - hybrid (2012-2015)
2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado 1500 Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10
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04-15-2018, 09:03 PM
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#5
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Junior Member
Join Date: Jul 2017
Posts: 20
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Just out of warranty.
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04-15-2018, 09:09 PM
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#6
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Site Team
Join Date: Mar 2014
Location: Grayson County, Texas
Posts: 21,587
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Black water tank.
You may have to pull down the belly cover (assuming you have one) and check the wire to the lowest sensor on the black tank. I'll edit from another device to post a pic (if I can find it).
I had removed a middle wire in this pic (galley tank but it works the same).
Here’s why my galley tank registered NOT empty when it was.
__________________
2015 FR Wildcat 295RSX / GMC Sierra
Nights Camped: '13 = 49/'14 = 74/'15 = 74/'16 = 85/'17 = 110/'18 = 111/'19 = 86/'20 =108/'21 = 115/'22 = 135/'23 = 78; Booked for 2024 = 69
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04-15-2018, 09:38 PM
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#7
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Junior Member
Join Date: Jul 2017
Posts: 20
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Thanks Dan. Yes I have a belly cover. I will have to pull it down. Thank you for pointing me in the right direction, and for the pics. Very helpful.
Is there a trick to pop those sensors out?
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04-15-2018, 09:45 PM
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#8
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Site Team
Join Date: Mar 2014
Location: Grayson County, Texas
Posts: 21,587
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Yes, the stud is double-nutted with the wire's ring terminal in between. You remove one nut, remove the wire (remember which color goes where), loosen the remaining nut, put a set of side cutters behind that loose nut and pull out the sensor ------------------ ONLY if the tank is empty beforehand AND the sensors look like mine... else - punt.
There's a better description somewhere. You might search for 'sensor'.
EDIT: rockfordroo is correct. This design IS pretty weak.
__________________
2015 FR Wildcat 295RSX / GMC Sierra
Nights Camped: '13 = 49/'14 = 74/'15 = 74/'16 = 85/'17 = 110/'18 = 111/'19 = 86/'20 =108/'21 = 115/'22 = 135/'23 = 78; Booked for 2024 = 69
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04-15-2018, 09:52 PM
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#9
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Scoundrel
Join Date: Feb 2017
Location: Montrose, Colorado
Posts: 2,810
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Some toilets have a straight drain pipe down into the black tank. If so you can open the toilet flush valve and use a flashlight to verify how empty/full the black tank is. Good luck.
__________________
2024 Geo Pro 15TB, 400W Solar, 2 Golf Cart batteries
2015 F-150 5.0L V8 XLT Crew Cab, 4x4, Tow Package, 36 gal tank, 3.55 locker, 1891 payload, Integrated Brake Controller, Roadmaster Active Suspension
Wooden Spoon Survivor
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04-15-2018, 10:41 PM
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#10
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Junior Member
Join Date: Jul 2017
Posts: 20
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Quote:
Originally Posted by Mr. Dan
Yes, the stud is double-nutted with the wire's ring terminal in between. You remove one nut, remove the wire (remember which color goes where), loosen the remaining nut, put a set of side cutters behind that loose nut and pull out the sensor ------------------ ONLY if the tank is empty beforehand AND the sensors look like mine... else - punt.
There's a better description somewhere. You might search for 'sensor'.
EDIT: rockfordroo is correct. This design IS pretty weak.
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Thanks for all your help Dan!!!
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04-15-2018, 10:43 PM
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#11
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Junior Member
Join Date: Jul 2017
Posts: 20
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Quote:
Originally Posted by HangDiver
Some toilets have a straight drain pipe down into the black tank. If so you can open the toilet flush valve and use a flashlight to verify how empty/full the black tank is. Good luck.
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Thanks. I can an have done that. Its a newer Trailer and I just like things to work.
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04-15-2018, 11:03 PM
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#12
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Scoundrel
Join Date: Feb 2017
Location: Montrose, Colorado
Posts: 2,810
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Quote:
Originally Posted by KirkT
Thanks. I can an have done that. Its a newer Trailer and I just like things to work.
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__________________
2024 Geo Pro 15TB, 400W Solar, 2 Golf Cart batteries
2015 F-150 5.0L V8 XLT Crew Cab, 4x4, Tow Package, 36 gal tank, 3.55 locker, 1891 payload, Integrated Brake Controller, Roadmaster Active Suspension
Wooden Spoon Survivor
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