Error Messages - Buderus Logamax plus GB142-24 Installation And Servicing Instructions

16 Appendix

16.2 Error messages

Press the "Service"
code (e. g. " ").
Press the "Service"
code (e. g. " ").
The error message is a combination of the service code
(e. g. " ") and the error code (e. g. "
resolve the error message using the Service chapter in
this manual.
INSTRUCTION FOR INSTALLERS
The display may also show system faults
(e. g. " "). In principle, they are identified by
the initial letter "A" and they refer to faults
between the appliance and the additionally
available electronic components.
Display Meaning
Water flow / water pressure
System pressure too low < 3 psi (20 mbar).
Temperature difference between safety and
supply sensors too much or no temperature
increase after starting the burner.
Test of pump operation via a pressure increase
in the heating system (during pump start).
Temperature increase of safety sensor or supply
sensor too high.
Temperature difference between supply and
return sensor too much.
Pump feedback fault.
Fan speed
Fan unit failed during operation.
Air volume flow not lost for 24 hours.
Fan shut down during security test.
Fan unit is running too slowly.
Fan unit is running too fast.
Temperatures
Supply sensor over 220 °F (105 °C).
Sensor test failed
Safety sensor affected by short circuit or higher
than 266 °F (130 °C).
Loose contact or defective safety sensor.
Supply sensor affected by short circuit.
Loose contact or faulty supply sensor.
We reserve the right to make any changes due to technical modifications!
88
button to display the service
button to display the error
"). You can only
Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004
Display Meaning
Flame monitoring
No ionization message after ignition.
Ionization measured before burner start.
The flame went out during the heating phase.
Hot-surface ignitor on for too long.
Grid voltage
The grid power was interrupted after an error.
UBA fault.
External switching contact
External switching contact, e. g. temperature
safety switch for floor heating, has taken place.
System faults
Communication fault between UBA and KIM.
UBA fault.
UBA fault.
Faulty gas burner fitting cable connection.
KIM out of order.
Communication fault between BC10 basic
controller and UBA.
System faults
Internal UBA fault.
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