Service manual

TROUBLE SHOOTING GUIDE
Problem Possible Cause Solution
Feed Water Ball Valve is plugged
or closed.
Open Valve or unclog.
Clogged Sediment Pre-filter or
Activated Carbon Pre-filter.
Replace filters.
Low water pressure. Feed Water pressure must be
above 40 psig.
Reverse Osmosis. Membrane is
fouled.
See Feed Water operating limits.
Correct cause of fouling, replace
Membrane.
Plugged In-Line Activated Carbon
Post Filter.
Replace Post Filter.
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 psig (35–48 kPa)
range.
Air Bladder in the Holding Tank is
ruptured.
Replace tank.
Holding Tank Valve is closed. Open Valve.
No drain flow, the Drain Restrictor
is plugged.
Clear or replace Drain Restrictor.
The Check Valve is stuck. Free check.
Low quantity of Product Water
from Holding Tank
The ASO Valve is malfunctioning. Replace ASO Valve components.
In-Line Activated Carbon Post Filter
is plugged.
Replace Post Filter.
Empty water from Holding Tank
and with the faucet open, adjust air
pressure to 5 – 7 psig (35-48 kPa)
range.
Air pre-charge in the Holding Tank
is too low.
Check for leakage at the Air Valve
Stem.
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 Quantity of Product Water
from Holding Tank section above.
Clogged Sediment Pre-filter or
Activated Carbon Pre-filter.
Replace Filters.
Feed Water Pressure must be
above 40 psig.
Low Water Pressure.
Check Feed Water Ball Valve.
Reverse Osmosis Membrane O-
ring is crimped.
Check O-ring.
Reverse Osmosis Membrane brine
seal is not sealing up into the
manifold head.
Check the brine seal.
High Total Dissolved Solids
(TDS) in the Product Water
Reverse Osmosis Membrane is
expended.
If Membrane life is unusually short,
find and correct the problem.
Replace Membrane.
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