Buderus 600 - 11S Installation And Servicing Instructions page 44

5 Servicing
Code Meaning
9U
KIM defective
Possible
cause
1 KIM connected incorrectly or KIM defective
Code Meaning
E
with UBA defective
any
character
P
but
Possible
cause
1 Regulating device may have to cope with interference
2 UBA may be defective
Code Meaning
EP
Non compatible UBA fitted
Possible
cause
1 Regulating device may have to cope with interference
2 KIM connected incorrectly or KIM defective
Problem: No DHW, despite the system being operational
– Set chimney sweep switch to "0"
– Check three-way valve replace if necessary
– Check DHW sensor and replace if necessary
Problem: No heating, despite that there is a demand for heat and the boiler is operational
– Check regulating device configuration and/ or the wiring
– Check the wiring between the regulating device and the UBA (see subsection 5.3.6)
– Check all the wiring
– Check the UBA and replace if necessary (see subsection 5.3.3)
Subject to modifications resulting from technical improvements!
44 Installation and maintenance instructions for wall-mounted condensing gas boiler 600 - 11S/19S/24S/24C • 05/2004
Action
Check the KIM connector and fan connector.
If the connectors are fine then contact Boulter Buderus
Action
– Check if for example induction fields interfere with the
regulating device
– Check if the are any peaks in the electrical network
caused by maybe windmills or a power generator
– Press reset. If fault code remains then try to temporarily
connect a different UBA (see subsection 5.3.3)
Action
– Check if for example induction fields interfere with the
regulating device
– Check if the are any peaks in the electrical network
caused by maybe windmills or a power generator
– Check the KIM connector and fan connector. If the
connectors are fine then contact Boulter Buderus
Boulter Buderus Ltd. • http://www.boulter-buderus.co.uk