TVOC 2 MANUAL
Ion Science Ltd
Page 29 of 32
Unrivalled Gas Detect
ion.
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Diagnostics
If the F1 diagnostic persists, replace the sensor electrode stack, part number A-846496, re-power the instrument and
wait 5 minutes. If the F1 error continues, replace the sensor lamp, part number A-846656. Electrode stack and lamp
spares are identified in the spare parts section below.
If the instrument continues to exhibit the F1 failure after replacement of parts, please contact your Ion Science
distributor.
F3 error
Diagram 27
The F3 error occurs when the sensor is disconnected from the power supply. If an F3 error occurs, then check the red
cable is properly connected to the main PCB. If not push it fully home.
F4 error
The F4 error occurs when an incorrect selector pin setting is used, see
TVOC 2 Set-up.
Set a valid selector pin
configuration and restart the unit.
