Water2Buy RO 3.2, Manual, Page: 14 / 85

If any of the following occur
Cause Solution
Slow making of product water
Replace the pre-filter cartridge. If the production rate does not
improve, replace post-filter cartridge and reverse osmosis
membrane cartridge.
No product water
Check and make sure the flow restrictor going to train is not
blocked. (7)
Chlorine taste and/or odor
Replace the pre-filter, post-filter and reverse osmosis
membrane cartridges.
The numbers in brackets correspond to diagram 2.
Not enough water from storage tank
Cause Solution
Saddle valve (1) is plugged or closed. (very common
on plastic piping) Open saddle valve (1) or unclog. For plastic piping drill a 3mm
hole as the valve hole tends to close with plastic piping.
Sediment/carbon pre-filter or carbon post filter is
clogged. (2)
Replace filters. (2)
Low incoming water pressure.
Incoming water pressure must be above 2 bar (30 psi). Install a
booster pump.
Reverse osmosis membrane is fouled. (3)
Make sure incoming water pressure is within operating limits.
Make sure drain line is not clogged. (see high tds) correct
cause of fouling and replace ro membrane.
Air pressure in storage tank is incorrect. (4)
please watch our video on how to service the reverse
osmosis storage tank. www.water2buy.com/help
Empty water from storage tank. Air pressure in storage tank
should be between 0.6 bar (9 psi). (4)
Air bladder in storage tank is ruptured. (5) Replace storage tank. (5)
Storage tank valve is closed.(6) Open valve. (6)
No water to drain. Drain flow restrictor is clogged (7) Replace drain flow restrictor. (7)
No water to drain or constant flow to drain. Non
return valve blocked or faulty (8) see diagram 2.2
Replace non-return valve. (8) see diagram 2.2
The automatic shut-off valve is malfunctioning. (9)
see diagram 2.2
Replace automatic shut-off valve. (9) see diagram 2.2
Low water pressure from tap
Cause Solution
Air pressure in storage tank is incorrect. (11)
This is the no.1 reason for low flow from reverse
osmosis tap.
Please watch our video on how to service the
reverse osmosis storage tank.
www.water2buy.com/help Open tap (10) and empty water from storage tank. Shut off feed
water to unit (1) and remove storage tank (11) from under sink.
( The tank is easier to work on.)
Locate the air valve stem (4) (just like on a car or bicycle tire)
and add air. If there is still water in the tank, continue to add air
until all the water is removed.
Once all the water is removed, continue to add air and
pressurize to 0.6 bar (9 psi).
Re-install the tank under the sink, turn on the feed supply to the
unit (1) and allow the tank to fill. (if tank does not pressurise
then you need to replace the tank)
Carbon post filter is clogged. (2) Replace post filter. (2)
Storage tank valve is partially closed. (6) Open valve. (6)
The tap is out of adjustment or faulty. (10) Repair or replace tap. (10)
Heavy water use. Storage tank is empty. (11) Allow storage tank to refill.
Low water production.
See previous section on low quantity of water from storage
tank.
14