Test Products International 708 - Manual (Page 29)

Appendix E: ERROR CODES & TROUBLESHOOTING
The 708 analyzer will display certain codes to let you know of a malfunction.
Code
Displayed
Code Definition Possible Causes Corrective Action
Flo
Err Pump not drawing sample at
correct flow rate. Blockage / kink in flue probe
hose.
Dirty or blocked filter(s).
Worn pump.
Check and rectify.
Replace filter(s).
Return to TPI for service.
InIt
O2
Err
Oxygen sensor failed to ini-
tialize Flue probe connected to 708
prior to power up.
708 did not purge completely
from last sample.
Worn or defective oxygen
sensor.
Disconnect probe and
restart.
Purge for 20 minutes and
restart.
Return to TPI for sensor
replacement or install new
sensor.*
Try manually initializing the
sensor. See Appendix G.
InIt
CO
Err Carbon monoxide sensor
failed to initialize. Flue probe connected to 708
prior to power up.
708 did not purge completely
from last sample.
Worn or defective carbon
monoxide sensor.
Disconnect probe and
restart.
Purge for 20 minutes and
restart.
Return to TPI for sensor
replacement or install new
sensor.*
Try manually initializing the
sensor. See Appendix G.
Lo
bat
Low battery. Battery needs to be charged. Charge battery. If the battery
won’t hold a charge, replace
the battery.
oFL Overflow indication. The car-
bon monoxide being
mesured is above the instru-
ments capability. CO being measured is too
high or low. Remove the CO source and
allow the 708 to purge.
oFL Overflow indication. The tem-
perature being measured is
outside the maximum mea-
surement capability. Temperature being measured
is too high or low. Remove pressure source.
oPEn Unable to read thermocouple
(temperature). Temperature probe not con-
nected to input.
Worn temperature sensor. Connect temperature probe
to analyzer.
Replace temperature probe
or flue probe.
*Sensor replacement requires calibration gas.
Appendix E: ERROR CODES & TROUBLESHOOTING (Continued)
Problem Possible Cause Corrective Action
Efficiency reading incorrect NET efficiency selected.
Ambient temperature probe
not plugged in to T2.
Incorrect fuel selected.
Select GROSS efficiency.
See section 5.3.
Plug ambient probe into T2.
See section 5.2.
Select the proper fuel for the
equipment being tested. See
section 4.1.
Readings are erratic when
working on oil fired equip-
ment. Oil filter not installed or
installed incorrectly. Make sure the optional oil fil-
ter (A773) is installed. See
Appendix D.
One or all of the following
parameters; Ratio, CO air
free, excess air, and efficien-
cy read and print dashes. Measured values are such
that the calculated values of
these parameters are out of
range. Redo combustion test. Since
these are calculated values,
the measure values must be
within certain levels for these
to display. If the measured
oxygen level is above 19.9%
these parameters won’t
read.
These parameters might not
display or be applicable in
some tests.
Analyzer won’t turn off Oxygen and/or carbon
monoxide levels outside lim-
its. Allow the analyzer to purge
longer.