SS500e/SS2000e/SS3000e Gas Analyzers
B–22 4900002230 rev. D 2-6-20
Table B-1 Potential instrument problems and solutions (Continued)
Symptom Response
Serial Output is displaying garbled data
Make sure the computer COM port is set
for 9600 baud, 8 data bits, 1 stop bit, no
parity, and no flow control.
Be sure no other programs are using the
COM port selected.
Make sure the connections are good. Ver-
ify the correct pin connections with an
ohmmeter.
Make sure to select the correct COM port
into which the cable is plugged.
Serial output is providing no data Make sure the connections are good. Ver-
ify the correct pin connections with an
ohmmeter.
Make sure to select the correct COM port
into which the cable is plugged.
Make sure the computer COM port is set
for 9600 baud, 8 data bits, 1 stop bit, no
parity, and no flow control.
Be sure no other programs are using the
COM port selected.
LCD does not update. Unit is locked up.
Switch off power, wait 30 seconds, and
then switch power back on.
Improper temperature in the SCS Check the wiring to the heater/controller.
Refer to “Connecting Electrical Power
to the Enclosure Heater” on page 3-8.
Check and replace the temperature con-
troller and heater.
Low pressure or flow Check, clean and/or replace filters or
membrane separators. Refer to “Replac-
ing the membrane separators” on
page B-15.
Check and adjust the sample probe regu-
lator.
Check and clean the sample transport
tubing.
Check for leaks.
Check the relief valve for proper setting.
Refer to “Confirming the relief valve
setting” on page B-14.
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