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Instructions for use
External Error Detection (EED)
Function of the EED
The EED module can be connected to a central heating
boiler with a UBA-control.
The EED module displays a fault message in the event
of boiler malfunction.
The EED module also provides the option of transmitting
an external signal by means of a potential-free port
(make-and-break contact) in the event of that the appli-
ance malfunctions and in case of a power failure.
The EED module does not react to malfunctions in
external controls connected to the boiler.
The EED module can be connected to one boiler.
Switch SI "Lock" and "No Lock" (see figure 1)
In the "No Lock" position, a fault message is only displayed
in the event of a malfunction in the locking mechanism.
The display on the boiler will flash. This can be reset with
the UBA reset button.
The EED module will display a fault message in the
"Lock" position in the event:
– of a malfunction in the locking mechanism. This can be
reset by means of the UBA reset button.
– that the boiler is not activated within two hours of a heat
demand. This malfunction can be reset with the EED
reset button. The UBA reset does not influence this.
– that the boiler is blocked five times during these two
hours.This malfunction can also be reset with the EED
reset button.
12
External Error Detection (EED)
CON 2
1 2
Fig. 1
Switch "Lock" and "No Lock"
Subject to changes due to technical improvements!
External Error Detection (EED) • 08/2010
No
Loop
Error
3
2
1
CON 1
1 2 3
4
UBA