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	CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x	SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x	KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
2 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x	1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x	550, Standard Chrome Steel Faucet with Spigot for Water Filter,
1 x	.K6NTF KoolerMax K6ALK RO shell without tank and faucet
2 x	1st stage SF05 sediment filter (replace every 6-12 months)
1 x	204, 2nd stage GAC filter (replace every 6-12 months)
1 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x	Parts, Ro Water System Installation Parts Bag 1/4"
1 x	Special Filter Kit Koolermax dealer distribution kit
1 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x	225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x	733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x	SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x	3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x	Discontinued RD106
1 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x	WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x	SC208, Specialty Filter Iron Lead and Heavy Metal Removal Filter
1 x	602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x	4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75

View Cart	$1,535.00

1 x	CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x	SC227, Specialty Filter Refillable Color Changing DI Filter 20"
1 x	KF355UP, SUBSTITUTE/Upgrade to Antique Brushed Brass Iron Finish
2 x	205 2nd stage solid carbon block filter (replace every 12 month)
1 x	FK-BB20M3, Special Big Blue Filter Pack Bundle for WH350 WH-350
1 x	1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x	550, Standard Chrome Steel Faucet with Spigot for Water Filter,
1 x	.K6NTF KoolerMax K6ALK RO shell without tank and faucet
2 x	1st stage SF05 sediment filter (replace every 6-12 months)
1 x	204, 2nd stage GAC filter (replace every 6-12 months)
1 x	MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x	Parts, Ro Water System Installation Parts Bag 1/4"
1 x	Special Filter Kit Koolermax dealer distribution kit
1 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x	225UP, 5th stage Inline Alkaline upgrade (includes media)
1 x	733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x	SC412, Water Softening Filter Calcium Magnesium Hardness Removal
1 x	3150, 5th stage TFC-150 US membrane filter (every 2-3 years)
1 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x	Discontinued RD106
1 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
1 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x	WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x	SC208, Specialty Filter Iron Lead and Heavy Metal Removal Filter
1 x	602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x	4th stage TFC 75/85 US membrane filter (every 2-3 yrs) M75

View Cart	$1,535.00