INFICON T-Guard Leak Detection Sensor - Manual (Page 79)

Errors and Warnings
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W89 Over range!
The T-Guard™ Leak Detection
Sensor is contaminated with
helium.
Do not switch off the T-
Guard™ Leak Detection
Sensor
Keep the T-Guard™ Leak
Detection Sensor running while
providing external air into inlets
until the warning disappears.
If the warning occurs frequently,
increase the contamination limit.
Check the helium background,
refer to Info page 2.
Test leak value too high during
external calibration! Use a smaller test leak for
external calibration
W90 Calibration conditions not met
Error No. Plain text message Possible reason Recommendation