SECTION VII. TROUBLESHOOTING GUIDE
Problem
Possible Cause
Solution
Saddle Valve(feed water) is plugged of
closed.
Open Valve or unclog.
Clogged Sediment/Carbon Prefilter or
activated carbon post filter.
Replace Filters.
Low water pressure.
Feed Water pressure must be above 40
psi.
R.O. Membrane fouled.
See Feed water operating limits. Correct
cause of fouling, replace membrane.
Air pre-charge pressure in holding tank is
too high.
Air pre-charge is too low.
Empty water from holding tank, and with
the faucet open adjust air pressure to 5-7
psi range.
Air bladder in the holding tank is
ruptured.
Replace tank if RO-102 tank.Replace
bladder is RO mate 4 tank.
Holding Tank Valve is closed.
Open valve.
No drain flow, the Drain Restrictor is
plugged.
Clear or replace drain restrictor.
No drain flow, the drain orifice in the air
gap faucet is plugged.
Clean or replace the air gap facut.
The check Valve is stuck.
Free check.
Low Quantity of Product Water from
Holding Tank.
The A.S.O. Valve is malfunctioning.
Replace A.S.O. valve components.
Activated carbon post filter is plugged.
Replace post filter.
Empty water from holding tank and with
the faucet open, adjust the air pressure to
5-7 psi range.
Air pre-charge in the holding tank is too
low.
Check for leakage at the air valve stern.
Holding tank valve is partially closed.
Open Valve.
The dispensing faucet is out of adjustment
or faulty.
Repair or replace dispensing faucet.
Heavy water use, Holding tank is
depleted.
Allow holding tank to refill(adding a
second holding tank will increase storage
capacity).
Low pressure at the dispensing faucet.
Low water production.
See Low quantiy of product water section.
Clogged sediment/Carbon prefilter.
Replace filter.
Feed water pressure must be above 40 psi.
Low water pressure.
Check tapping valve.
R.O. membrane O-ring is crimped.
Check O-ring.
R.O. Membrane brine seal is not sealing
up into the manifold head.
Check the brine seal.
R.O. Membrane is expended.
If membrane life is unusually short, find
and correct problem/ Replace membrane.
High total dissolved solids (T.D.S.) in the
product water.
The product water and drain water lines
are reversed.
Correct plumbing.
Summary of Contents for RO-25T
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