5-14
Type II Water System
Thermo Scientific
Section 5
Maintenance and Servicing
Message
Possible causes
Action
Chk System Ballast
System UV ballast out of toler-
ance.
Replace system ballast
(TN1403X1). Call Technical
Services.
Flow Sensor Error
Check tank level.
Tank must be filled 25% or
higher.
No water flow to DI loop.
Check reservoir connections.
Check for air lock at DI pump.
Pinched tube preventing water
flow through DI loop (no water
is being dispensed).
Check tubing and repair as
necessary.
Flow sensor not connected to
control board or connection is
bad.
Check connection.
Flow sensor failure.
Replace sensor (ME1190X1).
Has the tank been emptied
and refilled?
Possible air in the line, allow
the unit to sit for several hours
in RUN mode to allow lines to
refill.
Insufficient Volume (second
line will display what portion
of the requested auto-dis-
pense remains)
Insufficient water volume in
reservoir to complete the
requested auto-dispense. This
could be the result of insuffi-
cient reservoir volume at start
of dispense, or other drainage
of reservoir (manual dispense
from spigot, or dispense from
distribution loop) during auto
dispense.
Wait for reservoir to sufficient-
ly refill, then reprogram auto
dispense for remaining volume
or time and complete the dis-
pense.
Unit will not finish
Sanitization mode
Float switch(s) aren’t register-
ing
Make sure float switches are
registering on the display.
Pre-filter, MPS, and/or carbon
cartridges are not connected.
Check to see if the pre-filter,
MPS, and/or carbon cartridges
are connected.
Tank indicator reading is in
liters instead of %.
Float switch connection is
interrupted
Make sure the float switch
connector is inserted all the
way into the receiver in the TII.
I2C error
Display remoted from unit.
Error can occur if display is
remoted. Information error
only, press any key or turn unit
off/on to clear.
System Alarms and
Errors (continued)
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