BA2070/03/1616
• Check the LED indication.
• Use the function of the optional test button (see chapter
5.2) to check the signaling paths of the relays.
5.4 Fault monitoring
The device uses the self-monitoring function to detect internal
faults and reports these via the exterior LEDs and the ERROR
relay.
Table 1 lists the individual faults and how to fix them.
5.5 Fuses/overvoltage protection
A fine fuse (Fig. 2/1) against overvoltage is installed on the
board in the terminal box (Fig. 2). If necessary, this can be
replaced by the spare fuse (1A/5x20/rapid action) (Fig. 2/2).
Fault LED
green
LED
yellow
LED
red
Remarks
Sensorunit right defective *) on off on
Failure of the sensor unit on the right. The controller for the humidi-
ty/temperature or the controller/monitor for the desiccant heater on
the right is not functioning. The sensor unit on the right should be
replaced. Contact a service technician or a Messko employee.
Sensorunit left defective *)
(only DB200D or DB200G)
on off flas-
hing
Failure of the sensor unit on the left (only DB200D or DB200G). The
controller for the humidity/temperature or the controller/monitor
for the desiccant heater on the left is not functioning. The sensor
unit on the left should be replaced. Contact a service technician or a
Messko employee.
SiO2-heater right defective on flas-
hing
on
Failure of the desiccant heater on the right. The desiccant can no
longer be regenerated. The dehydrating breather should be replaced.
Contact a service technician or a Messko employee.
SiO2-heater left defective
(only DB200D or DB200G)
on flas-
hing
flas-
hing
Failure of the desiccant heater on the left (only DB200D or DB200G).
The desiccant can no longer be regenerated. The dehydrating
breather should be replaced. Contact a service technician or a Messko
employee.
Internal error flas-
hing
flas-
hing
flas-
hing
Housing heater defective or insufficient voltage.
γ-controller defective
(only DB200G)
flas-
hing
off on
Contact a service technician or a Messko employee.
Ball valve defective (only
DB200G)
flas-
hing
off flas-
hing
Contact a service technician or a Messko employee.
Failure of the supply voltage
off off off
Check to determine whether the supply voltage is connected
correctly and switched on. Otherwise contact a service technician or
a Messko employee.
Table 1 *) A replacement sensor can be ordered from Messko. The sensor is very easy to replace yourself.
NOTE
If the fuse fails repeatedly, please contact Messko. Over-
voltages can be adjusted by installing an optional adapter
transformer in the housing cover of the terminal box.
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