Instruction manual

EASYpure II RF 10-3Thermo Scientific
Section 10
Troubleshooting
Error Conditions
Problem Possible Causes Action
Display reads “Er1”. (Purity
data error)
Air in system.
Purge air from system by
drawing off water according to
the instructions in the
Operation section.
Resistivity cell not connected
to circuit board.
Check resistivity cell lead con-
nections. (P1 on meter board,
PCX70)
Resistivity cell dirty. Clean cell and reinstall.
Resistivity cell out of toler-
ance.
Replace resistivity cell.
Meter board out of tolerance. Call Technical Service.
Display reads “Er4”. (Cell
temperature sensor error)
Resistivity cell not connected
to circuit board.
Call Technical Service.
Resistivity cell dirty. Replace resistivity cell.
Meter board out of tolerance. Call Technical Service.
Display reads “Er5”. (Meter
board communication error)
Meter board needs to be
reset.
Turn unit “Off” and back “On”.
Meter board not connected to
display/control board.
Call Technical Service.