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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2 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	CKV0402, Blue color Elbow Check Valve Elbow Type
2 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	2nd stage C10 carbon block filter (replace every 6-12 months)
1 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x	531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x	602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x	CBV-0404, Tank Ball Valve to 1/4 tubing standard RO tank size
1 x	SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x	1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x	.AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x	SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x	4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x	BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x	719, Drain Saddle Clamp / Valve
1 x	.AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x	AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x	709, Automatic Shut Off Valve 4-way Four Way Valve
1 x	PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO

View Cart	$1,086.00

2 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	CKV0402, Blue color Elbow Check Valve Elbow Type
2 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x	2nd stage C10 carbon block filter (replace every 6-12 months)
1 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x	531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
1 x	602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x	CBV-0404, Tank Ball Valve to 1/4 tubing standard RO tank size
1 x	SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x	1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
1 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x	.AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x	SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x	4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x	BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x	719, Drain Saddle Clamp / Valve
1 x	.AR125 Dual Outputs Aquarium & Home Drinking RO Filter System
1 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x	AQF-600-105, Flow Meter Panel Mount 1/2" MPT
1 x	709, Automatic Shut Off Valve 4-way Four Way Valve
1 x	PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO

View Cart	$1,086.00