20
OTHER TROUBLESHOOTING
PROBLEM
CAUSE
CORRECTION
Chlorine taste and/or odor
in the RO product water.
The amount of chlorine in your water sup-
ply exceeds maximum limits, and has
destroyed the RO membrane.
If the water supply contains more than 2.0 ppm of chlorine,
additional filtering of the water supply to the RO is needed.
Correct this condition before doing maintenance on the RO
system.
Replace the prefilter, post filter and RO membrane cartridges.
The prefilter is no longer removing chlorine
from the water supply.
Other taste and/or odor.
Post filter expended.
Replace the post filter cartridge. If taste and odor persists,
replace the prefilter cartridge and RO membrane cartridge.
RO membrane cartridge expended.
Contamination in product water storage.
Use sanitizing procedures. Replace the post filter cartridge.
System makes product
water too slowly.
Water supply to the RO system not within
specifications.
Increase water pressure, precondition the water, etc., as need-
ed to conform before doing maintenance on the RO system.
Prefilter or RO membrane cartridges
plugged with sediments or fouled.
Replace the prefilter cartridge. If rate does not increase,
replace the postfilter cartridge and RO membrane cartridge.
Flow Control Insert plugged.
Check and clean Flow Control Insert.
System makes lower
amount of product water
than usual.
Storage tank air-charge less than 5 - 7 psi. Open RO faucet and drain tank until flow slows to a drip.
Keep faucet open and check tank pressure. If low, pressurize
to 6 psi. Close faucet to refill the tank.
High total dissolved solids
(TDS) in product water -
flashing red LED.
Water supply to the RO system not within
specifications.
Increase water pressure, precondition the water, etc., as need-
ed to conform before doing maintenance on the RO system.
RO membrane cartridge expended.
Replace the prefilter, postfilter and RO membrane cartridges,
flow control, and screen.
Water leaking from faucet
airgap hole.
Drain side of faucet airgap (3/8” tubing)
plugged, restricted, or incorrectly connected
to drain point.
Inspect and eliminate restriction or plug. Refer to installation
instructions for proper drain connection.
Continual water flow to
drain.
Check valve or automatic shutoff assembly
plugged, restricted or parts worn.
Clean, repair or replace as needed.
Faucet LED indicator light
does not function after bat-
tery change.
Battery dead.
Replace with new battery.
Battery installed incorrectly.
Install battery correctly.
Continual high water flow
to drain and no product
water.
Missing flow restrictor in red drain tube or
its corresponding port.
Replace flow restrictor.
REVERSE OSMOSIS SYSTEM CARE GUIDE
MODEL NOs. ERO-385, ERO-385E & HERO-385Plus
1.
AT LEAST every 6 months, replace the prefilter and postfilter cartridges or when faucet LED flashes yellow or Wi-Fi alert indicates “Replace filters”.
2.
Replace the RO membrane cartridge when the percent rejection of total dissolved solids (TDS) is less than shown in the specifications (see
B
, below)
or when faucet LED flashes red or Wi-Fi alert indicates “Replace membrane”.
3.
Replace the batteries once per year or when Wi-Fi alert indicates “Replace batteries”.
If any of the following occur before the 6 months, replace as directed.
A.
Slow Making of Product Water: Replace the prefilter cartridge. If the
production rate does not improve, replace the post filter cartridge and RO
membrane cartridge.
C.
Chlorine Taste and/or Odor: Replace the prefilter, post filter and RO
membrane cartridges.
B.
High Total Dissolved Solids (TDS) in Product Water: If water quality is in
question, contact your local dealer for testing. It is important to test both
the treated and untreated water to determine system performance. If the
TDS is not within the system's performance guidelines, replace the pre-
filter, post filter and RO membrane cartridges.
CARE OF YOUR REVERSE OSMOSIS SYSTEM
