Water running continuously nonstop drain when tank is full:

The drain should stop when the tank is full and you're not using water.

If the water keeps draining, then there are 2 possibilities:

1. the auto-shut-off valve is not functioning correctly, need to replace the valve. This is the device that has 4 tubing connected to it. It looks like a square block or disc shape

2. the check valve is not working correctly.

Both are wearable parts that need to be changed every 2 to 3 years along with the membrane flow restrictor.

Here's the part you need: RO Maintenance Kit Please make sure to select the corresponding maintenance kit for your RO system model. Any questions please feel free to email us.

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1 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
2 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	201, 1st stage sediment filter (replace every 6-12 months)
1 x	752, DC Booster Pump w/ Transformer
2 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x	2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x	Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x	BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x	NM-5104, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
3 x	Optional: 564 Membrane Filter Housing Wrench Opener
1 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x	RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x	3rd stage C10 carbon block filter (replace every 6-12 months)
1 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x	531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x	818, DI Resin Refill Bag 16oz (good for up to three refills)

View Cart	$1,381.99

1 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD106
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
2 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	201, 1st stage sediment filter (replace every 6-12 months)
1 x	752, DC Booster Pump w/ Transformer
2 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x	2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x	Conversion Kit, Convert Aquarium to Drinking RO Water System
1 x	BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x	NM-5104, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
3 x	Optional: 564 Membrane Filter Housing Wrench Opener
1 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x	RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x	3rd stage C10 carbon block filter (replace every 6-12 months)
1 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x	531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x	818, DI Resin Refill Bag 16oz (good for up to three refills)

View Cart	$1,381.99