Buderus 24C Servicing Manual page 7

Messages - Universal Automatic Burner (UBA)
Display after
Display pressing the
service button
7
A
C
F
H
L
8
y
9
A
C
F, H, P
L
U
E
Any indication,
except
P
P
Table 2 Displayed UBA fault warning messages
Subject to modifications resulting from technical improvements!
Servicing manual for wall-mounted condensing gas boiler 600 Series 11S/19S/24S/24C • Issued 02/2006
Meaning
Mains voltage
Voltage in UBA too low or too high
Mains voltage interrupted following a fault warning message
F3 fuse defect, or UBA system error
Voltage peaks in UBA
UBA timer error
General fault/gas-pressure
External switching contact, e.g. temperature monitor for floor heating, has
been tripped
System error
System error
Incorrect cable connection at KIM, or KIM defective
System error (UBA defective)
Wiring to gas-burner assembly incorrect, or loose wiring connections
in UBA
KIM defective
UBA system fault
UBA system fault
Non-compatible UBA fitted
Buderus Ltd. • http://www.buderus-domestic.co.uk
1
Trouble-
shooting
flow diagram
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