User Guide

8 Tips and assistance
14
8 Tips and assistance
8.1. Questions and answers
Question Possible causes Possible solution
All gas concentration
indicator segments are lit
up, audible signal is off
Sensor is missing or is no
longer fully functional
> Change sensor.
At the smallest of
movements, the
instrument signals a leak
• Sensor wires are
kinked.
• Sensor has been
exposed to a high
degree of humidity for
too long.
> Remove sensor and
examine wires. If
necessary,
straighten wires with
pincers.
> Switch the
instrument on and
wait until the alarm
switches off
(duration: up to
20 minutes).
Instrument is not very
sensitive, seems to ignore
leaks or does not detect
some types of refrigerant.
Sensor has reached the end
of its service life.
> Change sensor.
Instrument cannot be
switched on.
Batteries are depleted. > Change batteries.
If we have not been able to answer your question, please contact
your local dealer or the Testo Customer Service. Contact details
can be found on the internet at www.testo.com/service-contact
8.2. Accessories and spare parts
Description Item no.
Replacement sensor 0554 2610
Replacement filter 0554 2611
For other accessories and spare parts, please refer to the product
catalogues and brochures or look up on the internet at
www.testo.com