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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
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