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9. Troubleshooting
If defects not described here should occur,
please contact your distributor or Testo Customer
Service. You will find contact details in the Warranty booklet or in Internet at
www.testo.com.
Defects when switching on:
Defect
Possible causes
Remedy
Analyser cannot
Spent rechargeable
Change rechargeable batteries/batteries (See Chapter 8.1,
be switched on
batteries/batteries
P. 23) or connect mains unit (accessory)
flashes and
Operating temperature
Analyser should be brought into permissible operating
zeroing starts
too high or too low
temperature range
again
flashes and
Flue gas temperature
Connect flue gas temperature probe
zeroing
probe not attached or
or check connection
starts again
incorrectly attached
-or-
Thermocouple of flue
Change thermocouple
gas temperature probe
(See Chapter 8.6 Changing thermocouple, P. 25)
defective
O
2
flashes and
O
2
value too low because
Expose probe to fresh air and run zeroing phase again.
zeroing starts
flue gas probe pipe is
again
in flue gas duct
If not successful: O
2
measuring cell is defect and has
to be changed (See 8.8 Changing measuring cells, P.26)
CO flashes and
Flue gas probe pipe
Expose probe to fresh air and run through
zeroing starts
in flue gas duct
zeroing phase.
again
-or-
If not successful: C0 / CO/H
2
measuring cell is defect and
CO value not
and has to be changed (See 8.8 Changing measuring cells,
stable
P. 26)
Error
and an
Various
Switch off analyser and contact Testo Customer
error number
Service Department or contact your nearest dealer
are displayed
