37
Maintenance
— The display containing the current gas
concentration changes with the display
»OK«.
● Press the key to confirm the calibrati-
on or wait for 5 seconds.
If a fault has occurred during the fresh air
calibration.
— The fault message » « appears and
» « is displayed for the respecti-
ve sensor instead of the measured value
● In this case, repeat the fresh air calibrati-
on.
● If necessary, replace the sensor,
page 46.
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