24
Troubleshooting
Guide
connect to auxiliary faucet
POSSIBLE CAUSE
SOLUTION
Clogged pre-filter.
Low incoming water pressure.
Reverse Osmosis membrane is expended.
Product water and drain water lines are
reversed.
No water to drain. Drain flow restrictor
is clogged.
No water to drain. Air gap faucet is
clogged.
The automatic shut-off valve is not
closing.
New carbon post-filter has not been
rinsed completely.
The incoming feed water TDS has
increased.
Replace pre-filter with Brita
®
Redi-Twist™ USF-201.
Incoming water pressure must be above 40 psi. Install a Booster Pump or Permeate Pump.
If membrane life is unusually short, find and correct the problem (average life is 1-2 years).
Replace RO Membrane.
Correct plumbing according to installation instructions.
NOTE: Water will only flow to drain when unit is producing water. Remove tubing from membrane
drain port, cut 1" length off end of tubing and add new restrictor.
Remove faucet body from faucet base and disconnect air gap 1/4" tubing. Ensure there are no
obstructions - clear them out. Replace air gap faucet. Remove faucet body from faucet base and
disconnect drain 3/8" tubing. Ensure the drain connector is properly aligned with the hole in the
drain pipe. Ensure there are no obstructions - clear them out.
Repair or replace automatic shut-off valve. Refer to maintenance section.
Drain holding tank twice to rinse new carbon post-filter.
An increase in feed water TDS will also give an increase in Product Water TDS.
Product Water is High in Total Dissolved Solids (TDS)
POSSIBLE CAUSE
SOLUTION
Water leaks from faucet spout.
Leaks from connection to the faucet.
Ensure the faucet spout is properly seated. Repair or replace the faucet.
Check and fix compression fittings to faucet. Repair or replace the faucet. Turn off the cold
water shut-off valve to the Filter System to release pressure in the system. Loosen and
remove the compression nut on the faucet for filtered water stem. Check the 1/4" plastic
tubing to see if it is cut squarely. Make sure the 3/8" plastic tubing is placed firmly into the
end of the faucet stem; retighten the compression nut securely by hand; then tighten 1/2
turn with an adjustable wrench. Make sure tube insert is inside the tubing and the ferrule
is in proper orientation. Turn the cold water shut-off valve back on and turn on the faucet
for filtered water.
Faucet Connect Fittings Leak
Summary of Contents for Redi-Twist USS-335
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