HYDAC ENS 3000 - Manual (Page 20)

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10.2. OTHER MESSAGES
Other messages that cannot be acknowledged by pressing any key may also
appear on the display.
Possible message, if the ENS has not yet been used:
: Flashing display of all centre LEDs.
The ENS detects an undefined condition, i.e. the level of the fluid
is outside the active zone. Therefore the level is either too low or
too high.
Action
: If level is too low: top up the fluid until a valid measurement is
detected.
If level is too high: drain the fluid until a valid measurement is
detected.
Possible message, if ENS has already been in use:
0.0
A flashing zero value in the display
The ENS detected a change in fluid level which is below the active
zone. The last reliable fluid level measured is less than the average
value of the unit's effective range.
xx.x
A flashing non-zero value in the display
The ENS detected a change in the fluid level which is higher than the
active zone. The last reliable fluid level measured is greater than the
average value of the unit's effective range.
Possible values for x.xx: 6.70, 10.25, 14.15, 23.30 (without offset
values)
: Flashing display of the right and left-hand centre LED.
The ENS has detected a fault and the distance between the
imperfection and the measurement signal is so small that no clear
measurement signal can be identified.