Trouble shooting guide - reverse osmosis systems – Environmental Water Systems RO4-UV User Manual
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Leak at cartridge housing,
Leak at membrane housing,
or UV housing (if applicable)
Water Flow Issues
No water
Not enough water
Water flow is restricted
Low flow from unit
Drain Issues
No drain water
Leaking drain assembly
Leak from air gap opening in
faucet or Water running out
of Air Gap adaptor of faucet
Excessive drain noise or
gurgling coming from faucet
More than usual or exces-
sive drain noise or gurgling
due to rapid water flow on
older systems
Electrical Issues
UV not working
•Locate and align O-ring into groove on top of filter housing,
•Inspect o-ring at uv housing cap
•Replace simple o-ring part for correct housing
•Replace filter and correct issue that caused the problem (no plumbing needed)
•Turn main water supply on •Turn water on at inlet connection
•Unit may not operate properly at less than 35 PSI feed line pressure (max: 75
PSI)
Make sure membrane is in middle, Stage 2 and filters are in correct locations
•Follow instructions to connect tubes to proper fittings
•Empty tank needs to fill over several hours
•Close other connected devices and allow tank to completely fill.
•Maximum limit to storage tank and 2 other devices
•Total length of combined tubing to tank, faucet, and other devices not to exceed
20 feet. Vertical piping not applicable. Remote unit location is discouraged.
•Tank needs 5-7psi without water. Too much or too little and tank will not fill and
dispense water properly. Check tank pressure with (0-20) gauge. Empty tank
than use bicycle or sport ball pump to adjust
•Empty tank completely and allow system to produce a new tank of water, empty
and repeat
Make longer loop with tubing to remove kink or bend
If there is flow rate through unit without filters then there is a need to replace
sediment and/or other filters based on water conditions and usage
Replace brine restricter
Realign drain saddle, check for open drain hole
Follow proper instructions for Air Gap installation and connections. Check hole
for proper draining and proper drain saddle installation. Check for proper drain
location
Check hole for proper draining and proper drain saddle installation
Make sure membrane is in middle, Stage 2 and filters are in correct locations
Check for proper drain location
Remove debris or restriction
Cut off excess drain tubing
Incoming pressure should not exceed 75 psi
Follow the warning in startup procedures and follow the “Burping” Procedure to
remove air in the lines
Follow troubleshooting for low water quality and fast filling tank, this creates
greater drain water flow.
Tank needs to fill more often due to greater usage
•Connect lamp cord and/or Plug in transformer.
•Make sure unit plugged into an unswtiched electrical outlet. Check GFI reset.
Surge suppression is highly recommended
•Replace UV Lamp
•Replace UV Transformer
Trouble Shooting Guide - Reverse Osmosis Systems
Misaligned, damaged or missing
o-ring
Cracked housing due to pres-
sure issues or freezing
Water supply is off
Low water pressure
Filters amd membrane placed in
the wrong order
Incorrect Tubing Connections
Storage tank depleted
Other devices connected to sys-
tem demanding too much water,
too many other devices
Lengthy plumbing run, verti-
cal plumbing, unit in a remote
location
Storage tank pressure is wrong
Storage tank valve not opened
“TDS” Creep
See RO Maintenance
Kinked or bent tubing
Clogged prefilter cartridge and/
or other cartridges
Clogged brine restricter
Misalignment of hole in drain
saddle.
Black 1/4” & 3/8” tubing misin-
stalled or backwards
Drain saddle not allowing water
to drain into trap properly
Filters amd membrane placed in
the wrong order
Drain assembly installed on bad
or non-preferred part of your
sink drain, Hole or drain tube
is blocked or obstructed with
debris
Excessive slack in drain tubing
High feedwater pressure
Air trappped in system echos
the sound of water flow
Same issues with Low Water
Quality Troubleshooting
High or greater water usage
Lamp damaged, lamp cord has
not been connected,
Transformer is not plugged in
or connected to wrong type of
outlet
Lamp has burned out
Transformer not working
Issue(s)
Possible
Causes
Solution