Transmitter Error Messages - TESTO 6381 Instruction Manual

4 Transmitter
Message Display
02809 Sensor early
warning*
* Early warning
** Current malfunction
4.5.3.

Transmitter error messages

Error messages show a current malfunction.
Message Display
03401 No probe signal The probe
03508 Wrong probe
01505 Watchdog error Due to a processor
0300A % RH short-
circuit
0300B % RH sensor
broken
0300C T short-circuit
0300D T sensor broken The temperature sensor
84
Cause
For testo 6617 probe
only: The cover
electrode of the sensor
is damaged; this may
soon cause the sensor
to break
Cause
communication is
interrupted
The connected probe
is not compatible with
the present transmitter
error, the transmitter
performs an automatic
restart
Short-circuit in humidity
sensor
The humidity sensor is
damaged (sensor
broken)
Short-circuit in
temperature sensor
is damaged (sensor
broken)
Remedying of fault
Carry out visual
inspection. If the mirror-
like surface of the
sensor is dirty or
damaged, contact
Testo Service
Remedying of fault
Ensure that the probe
connector is fully
engaged in the
transmitter.
If communication still
cannot be established,
contact Testo Service
Use a compatible probe
Note: Probe 661x for
transmitter 638x
If the problem occurs
frequently, contact
Testo Service
Contact Testo Service
Contact Testo Service
Contact Testo Service
Contact Testo Service