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	913, 5th stage inline carbon filter (every 12 months)
1 x	KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
2 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	.AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x	532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	KF310, Elite Series: Polish Chrome Drinking Water Faucet
3 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x	KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x	O-RING FOR WH10 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 10" CANISTER
1 x	RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
2 x	B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x	KF750, Elite Series: Polish Chrome Drinking Water Faucet
1 x	KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x	277, SED1005BB Big Blue 5 micron sediment filter 10"
1 x	OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x	288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x	.AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x	KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
1 x	205, 3rd stage solid carbon block filter (replace every 12month)

View Cart	$1,015.50

1 x	913, 5th stage inline carbon filter (every 12 months)
1 x	KF612, Elite Series: Oil Rubbed Bronze ORB Drinking Water Faucet
2 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	.AR104H High Efficiency Membrane Aquarium Reef Aeroponics RO DI
1 x	532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	KF310, Elite Series: Polish Chrome Drinking Water Faucet
3 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x	KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
1 x	O-RING FOR WH10 WHOLE HOUSE SYSTEM HOUSING BIG BLUE 10" CANISTER
1 x	RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
2 x	B1034, 10" Big Blue Filter Housing Cartridge WH5 WH10 WH1134
1 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x	KF750, Elite Series: Polish Chrome Drinking Water Faucet
1 x	KF355, Antique Brushed Brass / Iron Finish Drinking Water Faucet
1 x	277, SED1005BB Big Blue 5 micron sediment filter 10"
1 x	OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
1 x	288, CB1010BB Big Blue Carbon Block Filter 20K-50K gal 10"
1 x	.AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x	KF511, Polished Chrome Cross-Handle with Gold Trim Faucet
1 x	205, 3rd stage solid carbon block filter (replace every 12month)

View Cart	$1,015.50