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10 Correcting Faults
10.1.2 F300K Error Codes
NOTICE
H and U processor
The F300K reports errors of the H and U processors. The same error code contents are dis-
played with the same number. They are differentiated by means of a preceding H or U. The
operating hours when the error occurred and additional information are displayed in the error
menu.
No. Description
017 Mode selection
External error or internal hardware error
– no or more than one BA activated
018 Periodic signal
Signal frequency [Hz]
– Sensor detects lamplight
– strong resonance in burner chamber
027 Excess temperature
Warning temperature’s limit value exceeded
– Ambient temperature is too high
035...
039
Communication with internal UI
– Activate terminating resistor in UI or when accumulating change F300K or UI
035 Input buffer overflow internal bus
036 Communication with internal UI
037 Acknowledge error internal bus
038 BusOff Bus-A
039 Error-warning-level reaches internal bus
070 Power supply
Voltage breakdown or voltage interuption
– 24V DC disturbed from outside
071 Password generation
No PW of level 4 produced
– Repeat input
075...
079
Communication via external BUS
– Disorder in the wiring
– Termination resistor incorrect
– when accumulating change F300K or UI on the bus
075 Input buffer overflow
076 Output buffer overflow
077 Acknowledge error
078 BusOff
079 Error-warning-level reached
093 EEPROM writing error
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