15
Problem
Possible Cause
Solution
High Total Dissolved
Solids (TDS) in the
Product Water
Low water pressure.
Feed water pressure must be above
40 psig.
R.O. membrane is not fully seated
in the bottom of the housing.
Re-seat the R.O. membrane.
R.O. membrane o
–rings are
damaged or missing.
Check o
–rings.
R.O. membrane brine seal is not
sealing properly.
Check the brine seal.
R.O. membrane is expended.
Replace membrane. Check
operating limits (page 4).
The Product water and drain water
lines are reversed.
Correct plumbing.
The ASO valve (Auto Shutoff
valve) is allowing drain water to
mix with product water.
Replace ASO valve.
No drain flow, drain restrictor is
clogged.
Clear or replace drain restrictor.
No drain flow, the drain orifice in
the dispensing faucet (optional air
gap faucet only) is plugged.
Clear or replace dispensing faucet.
The ASO valve (Auto Shutoff
valve) is not closing.
Replace the ASO valve.
New post-filter or activated carbon
pre-filter not rinsed completely.
Flush with two full tanks of product
water.
The feed water TDS has
increased.
An increase in feed water TDS will
give a corresponding increase in
product water TDS.
Tastes and odors in the
Product Water
The post-filter or activated carbon
pre-filter is exhausted.
Replace filters.
There is foreign matter or bacteria
in the R.O. system.
Clean, flush and sanitize the
system. Replace the filters.
The product water and drain water
lines are reversed.
Correct plumbing.
Dissolved gasses in the feed
water.
Pre-treat feed water to remove
dissolved gasses.
Increase in product water TDS.
See
“High TDS in the Product
Water
” section.
Faucet leaks or drips
Leaks from base of the delivery
tube.
O
–ring is bad, replace o–ring.
Fitting leaks in general
Close the feed water saddle valve and relieve pressure before
disconnecting any tubing or replacing any fitting. Before replacing a
fitting, re
–cut the tubing and re–insert into the fitting to see if that solves
the leak. If pipe threads are leaking, remove and re-tape with Teflon
®
tape.
