Troubleshooting
Problem Possible Cause Solution
Membrane expended Replace Membrane module. Contact your
local Hague dealer
Membrane attack by chlorine (Not applicable
to CTA element)
Precarbon may be exhausted. Replace with a
new cartridge and a new membrane
Check valve failure Replace check valve. Contact your local
Hague dealer
Insufficient brine flow rate-screen of flow
restrictor pressure/control plugged
Replace or flush out screen and /or flow
restrictor/pressure control. Contact your local
Hague dealer
A clogged pre-filter creates pressure drop
and low brine flow
Replace the clogged pre-filter cartridge with a
new one
Feed pressure too low See Filter Specifications chart to verify
minimum feed pressure for your model
Insufficiently flushed Carbon Post-Filter
cartridge
Flush Carbon Post-Filter with product water.
One or two tanks should be sufficient
High product water TDS
Increase in feed water TDS Contact your local Hague dealer
Feed water shut off Turn on your feed water valve
Low feed pressure See Filter Specifications chart to verify
minimum feed pressure for your model
A pre-filter cartridge clogged Replace the clogged pre-filter cartridge with a
new one
Screen in flow restrictor/pressure control
plugged
Replace or flush out screen and/or flow
restrictor/pressure control. Contact your local
Hague dealer
Membrane fouled Determine and correct cause; replace
membrane. Contact your local Hague dealer
Product check valve stuck Replace check valve
Tank overpressurized Adjust air pressure between 5 and 7 PSI
Over use Contact your local Hague dealer
Tank valve off Open tank valve
No water or not enough
water
Stalled permeate pump Confirm both product and reflect flow into and
out of permeate pump. Replace pump if
necessary
Low water production See “No water or not enough water”
Tank lost air precharge Adjust air pres sure between 5 and 7 PSI valve
stem and tighten
Tank diaphragm slipped Replace tank
Carbon Post-Filter clogged Replace Carbon Post-Filter cartridge
Low flow rate from
spigot
Tank valve partially closed Open tank valve
WaterMax RO Owner’s Manual 11/11/2009 41