8 Tips and assistance
75
8 Tips and assistance
8.1. Questions and answers
Error messages
Error message Possible causes / solution
Particulate matter
sensor pressure
incorrect! Check
pressure tube.
Cover of the particulate matter sensor is loose. Please
check.
> Check cover.
Seal ring in the cover of the particulate matter sensor
is damaged, dirty or not inserted.
> Check seal ring.
Sealing surface of the nozzle is dirty.
> Check sealing surface.
Air inlet nozzle and/or measurement gas outlet nozzle
is blocked, e.g. by attached sealing cap.
> Remove sealing cap.
Kink in the pressure tube
> Remove the kink in the pressure tube.
Pressure sensor defective.
> Contact Testo Service.
Nozzle data
incorrect. Please
enter again. See
instruction manual.
Nozzle data has not been entered correctly.
> Enter nozzle data again.
Nozzle flow
unstable. See
instruction manual.
(Error occurs during
measurement).
Nozzle is dirty.
> Clean the nozzle.
Hoses are not connected correctly or are kinked.
> Check hoses.
Rotation diluter is leaky.
> Check whether the cover of the rotation diluter or
the discs are inserted correctly.
Particle sensor
module open!
(Pump not running).
Cover of the particulate matter sensor is open.
> Close the cover.
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