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Thread: Black tank sensor
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03-15-2017, 02:02 AM #1
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Black tank sensor
My new 29RS black tank sensor always reads empty. One idea is that it may be a loose ground wire. Any suggestions as to where I should start to correct this problem? I don't live close to a Grand Design rv facility so I'm hoping there is a solution I can do myself.
Thanks,
Winddrinker
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03-15-2017, 11:26 AM #2
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Hi,
If you could private message me your contact information I will forward this concern to our regional service managers here at Grand Design RV & they will be able to assist you.
Thank you,
MissyMailing & Shipping Address: Grand Design RV, Attn: Customer Support, 11356 CR 2, Middlebury, IN 46540
Hours: Monday - Friday (8:00 am - 5:00 pm EST, closed holidays)
Contact us:
- Call Customer Support (direct) at (574) 825-9679
- Send a fax to (574) 825-9249
- Or email: [email protected]
*For EMERGENCY or immediate assistance contact your RV dealer or GDRV Customer Support directly at (574) 825-9679 with your 17-digit RV VIN, name and phone number.*
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05-31-2020, 01:35 AM #3
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I’m having the same problem. Right from the dealer the black tank always reads empty. My family and I (wife and three kids) just stayed in it for 10 days. No black tank overfill issues, but it definitely wasn’t empty when we went to dump it. The sensor reads empty no matter what. I tried flushing the tank 3 times with clean water, until the water coming out was pretty clear, and that didn’t fix it. No matter what I do, the indicator always reads empty.
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05-31-2020, 06:04 AM #4
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On our 2018 337 RLS the black tank reads 3/4 full all the time.
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05-31-2020, 07:17 AM #5
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I would guess more than 75% of all RV's have black tank sensors that aren't accurate. The reason is because toilet paper and other solids get caught on the sensors. In some cases you can clean the sensors by doing multiple flushes and/or pulling the RV for a couple hours with the tank 75% full of "clean" water (after dumping the tank) but that is usually a temporary fix at best.
Brian & Kellie
2020 Solitude 310GK-R, FBP, 1,460w solar, 540ah BBGC3, MORryde IS w/disc brakes
2020 F-350 Platinum SRW Powerstroke Tremor, 60g TF fuel tank, Hensley BD3-F air bag hitch
Previous setups:
2019 Solitude 373FB-R, 2019 F-350 Platinum DRW Powerstroke, Hensley BD5 air bag hitch
2016 Reflection 318RST, 2016 GMC 3500 Denali SRW Duramax, Hensley BD3 air bag hitch
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06-02-2020, 04:36 PM #6
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Yup I would guess that most black tanks read FULL most of the time. By flushing I can get mine to read 1/3 full. So if I want to know when it is full I wait until the toilet "burps". Seems when full it covers the vent pipe and burps the tank though the toilet.
Lyle & Judy and Annie the Westie
Retired (Government employee/USMC/USAFR, Ret) & Retired (insurance industry)
2018 F-350 CC LB DRW 4X4 6.7 (3.55)(Reese 18k "puck system")
2018 Solitude 310GK (5500 Onan Genset)
2020 F-150 SCSB XLT 2.7L 10 speed
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06-03-2020, 06:50 AM #7
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the black tank sensors are useless. I monitor mine by draining it down some after a few days.
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06-03-2020, 08:03 AM #8
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General question - why isn't the SeaLevel system used by more manufacturers? I've seen a retail price of <$300 for the aftermarket 4 tank sensor system. Not sure how much more $$ it would add over the standard sensor system. My FIL's sailboat has the SeaLevel system. He has never had a problem with them.
2022 Solitude 378MBS-R
2021 Ford F450 CC Lariat Ultimate FX4
1966 Shasta Astroflyte (1 year restoration project that is going on year 6)
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06-03-2020, 08:17 AM #9
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Brian & Kellie
2020 Solitude 310GK-R, FBP, 1,460w solar, 540ah BBGC3, MORryde IS w/disc brakes
2020 F-350 Platinum SRW Powerstroke Tremor, 60g TF fuel tank, Hensley BD3-F air bag hitch
Previous setups:
2019 Solitude 373FB-R, 2019 F-350 Platinum DRW Powerstroke, Hensley BD5 air bag hitch
2016 Reflection 318RST, 2016 GMC 3500 Denali SRW Duramax, Hensley BD3 air bag hitch
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