DISPLAY INFORMATION
6 720 648 726 (2011/07)
75
e [4/c/\| e [2/2/4| e Fault:
There is no bridging cable between contacts
22 and 24 of the UBA 3 contact strip.
Yes
5)
6)
7)
8)
flashing
1 Hz
No heating operation
and no DHW.
e [4/e/\| e [2/7/8| e Fault:
The sensor test has failed.
Yes
5)
6)
7)
8)
flashing
1 Hz
No heating operation
and no DHW.
e [4/f/\| e [2/1/9| e Fault:
The safety temperature sensor has detected
a flow temperature of over 105 °C.
Yes
5)
6)
7)
8)
flashing
1 Hz
No heating operation
and no DHW.
e [4/l/\| e [2/2/0| e Fault:
The contacts for the safety temperature
sensor have shorted or the safety
temperature sensor has detected a flow
temperature of over 130 °C.
Yes
5)
6)
7)
8)
flashing
1 Hz
No heating operation
and no DHW.
e [4/p/\| e [2/2/1| e Fault:
The contacts for the safety temperature
sensor have shorted.
Yes
5)
6)
7)
8)
flashing
1 Hz
No heating operation
and no DHW.
e [4/u/\| e [2/2/2| e Fault:
The contacts for the safety temperature
sensor have been interrupted.
Yes
5)
6)
7)
8)
flashing
1 Hz
No heating operation
and no DHW.
e [4/y/\| e [2/2/3| e Fault:
The contacts for the safety temperature
sensor have been interrupted.
Yes
5)
6)
7)
8)
flashing
1 Hz
No heating operation
and no DHW.
e [5/h/\| e [2/6/8| e Operating phase:
Component test phase.
No Off
e [6/a/\| e [2/2/7| e Fault:
The system has detected an insufficient
ionisation current during the ignition phase.
No
4)
5)
Off
e [6/a/\| e [2/2/7| e Fault:
The system has detected an insufficient
ionisation current after four start-up
attempts.
Yes
5)
6)
7)
8)
flashing
1 Hz
No heating operation
and no DHW.
e [6/c/\| e [2/2/8| e Fault:
The system has detected an ionisation
current before burner start-up.
Yes
5)
6)
7)
8)
flashing
1 Hz
No heating operation
and no DHW.
Display codes
Display code LED on
UBA 3
Other effects
z
Main
display
code
z
Sub
display
code
z
Key to display code
Reset
requi-
red?
Table 24 Display codes
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