Revision A
23
A-2. TROUBLESHOOTING
CONTROLLER Error Messages
ERROR CODES – SYSTEM PROBLEMS
Problems Cause Corrective Action
E1 – Calibration flags not
set
The unit has not been calibrated
or the unit has lost memory.
Return the unit to ATI or
Authorized service center for
repair and service as soon as
possible.
E2 – LSC voltage not
stable
Concentration readings are not
stable enough to perform a
reliable 100% or 0%.
1. Ensure that the selector
valve is in the correct
position and try again.
2. Check the aerosol source.
E3 – Optics Dirty
Sufficient aerosol condensation
and/or particulates have built up
on the internal optics such that a
cleaning is highly
recommended.
1. Return the unit to ATI
for repair and service as
soon as possible.
E4 – 100% calibration
failed
There is insufficient aerosol for
the unit to capture a reliable
100% value for the USER
reference.
1. Check the aerosol source.
2. Use a higher
concentration as the
100% reference.
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