Proline Low-temperature Thermostats
YACE0072 / 21.08.07 Starting up 95
7.14.4 High-level warning or alarm
k 3 Sec.
− Acoustic warning signal sounds for 3 seconds when the liquid level
rises so far that the uppermost switching point of the level sensor
has been reached.
kk
Or in case the warning function as described in 7.14.3 was chosen:
−
The acoustic signal with du
al-tone sounds.
− Warning
VW@pl0/2 (high level) appears when the bath
contains too much liquid.
− The
VW@pl flashes by turns with the numeral.
In case the alarm function as described in 7.14.3 was chosen:
− The acoustic signal with du
al-tone sounds.
− The red LED
above the fault triangle flashes.
Æ Heater switches off on both poles,
Æ Pump and refrigerating unit are switched off electronically.
− Find the cause of the fault. Possible causes may be:
1. Volume expansion on heating.
2. Feed to an external vessel may be interrupted so that only
return suction is possible.
3. Heat carrier liquid taking up moisture.
− If Alarm: Press Enter key. Warnings disappear automatically when
the cause is gone.
− Also, press this key if the unit has been switched off in the fault
state. Warnings disappear automatically when the cause is gone.
Command
High-level warning/alarm
− The display shows
Warning. To release press Enter key
Security 3 Level too high
or
Alarm AL 6: Level too high is shown in the display and
signifies that unlocking is only possible on the Master control panel.
Level warning
VW0/2
°C
Level alarm
@K 5
°C
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