51
T
ROUBLESHOOTING
Problem (cont.)
Possible Causes (cont.)
Action (cont.)
High RO Feed Purity
Improper feed water
Analyze feed water - check that
(unit being fed pretreated water).
system is being used for correct
application.
RO feed cell not connected to control
Check connection of feed cell.
board.
Feed cell fouled or out of tolerance.
Replace RO feed cell (E1403X3).
High RO Prod Purity
RO product cell not connected to
Check connection of product
control board.
cell.
Product cell fouled or out of tolerance.
Replace RO product cell
(E1403X3).
Low RO Purity
RO membranes are fouled.
Replace RO membrane(s)
(FL1265X1).
RO cell connections to control board
Check connections.
are unplugged.
RO cells are fouled or out of tolerance.
Replace RO cells (E1403X3).
Inlet Solenoid Err
No inlet water supply.
Check inlet water connection.
Ensure feedwater is turned on.
Inlet solenoid not connected to board
Check connection.
or connected improperly.
Inlet solenoid not functioning.
Replace inlet solenoid
(RY1265X2).
Regulator not functioning properly.
Replace regulator (PM1403X1).
Pressure Sensor Er1
Pressure sensor not connected to
Check connection.
board or improperly connected.
Pressure sensor not functioning.
Replace pressure sensor(s)
(TDX8) and recalibrate.
