RV Holding Tank Sensors: How to Clean Them?



Tank sensors on RVs are often discussed by RVers. Since the first tank sensors were installed on RVs, RV owners have asked this question. Holding tank monitor panels may give false readings due to a variety of factors, such as toilet paper, human waste, grease, etc. False readings are likely to be caused by dirty sensors. In order to function properly, sensors need to be cleaned.


RV tank sensors should be cleaned using the following methods:

The first method is:

Let it sit for at least 24 hours before emptying the tanks after you’ve made a water & dish soap solution that dissolves grease. It is often possible to resolve false readings by soaking grease- and gunk-covered sensors. A dishwasher detergent that contains softeners is also an option. You can clean the holding tanks by filling them approximately halfway with detergent and water, and then going to the destination where they need to be cleaned. Similar to your dishwasher, the agitation activates the detergent and cleans the tanks while you drive. At camp, you should be able to read your sensors correctly. Using hot water can enhance the effectiveness of both methods.

The second method is:

The black holding tanks of some new RVs have built-in rinsers for rinsing them after having been emptied. The owner hooks up a pressurized garden hose to a fitting on the RV’s sides after dumping. Water is sprayed around the black tank’s interior to clean the sensors. If your RV doesn’t already have a rinser, you can install one. Using the handheld unit, you can spray water directly at the sensor. Gray tanks can use rinsers if needed, but usually black tanks use them.

First, you can soften caked-on gunk, then you can knock it loose with the second method.

The third method is:

Don’t wait until problems arise to prevent them. If you follow these steps rather than waiting until your sensors become dirty, you can help keep them clean. In order to break down waste before it accumulates on your sensors, you should first use an enzyme waste digestion toilet chemical. Use plenty of water when flushing your toilet. This way, the toilet chemical will be able to perform its task, and the waste will be dispersed in the tank. Make sure there is enough water in the bowl before flushing. When the water suddenly rushes into your black tank when you flush, the solids will be spread out more evenly. This will prevent them from forming a pyramid at the toilet base. Campers who don’t have full hookups are forbidden from using large amounts of water or dumping their black tanks as frequently as those with full hookups.

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