BCU 480 · Edition 03.16l 65
Project planning information
Input bytes (BCU ➔ master)
Byte 2 Display
Status signal
Byte 0, Bit 2 = 0
Fault signal
Byte 0, Bit 2 = 1
51
51
Fuse F1 defective or safety interlocks
discontinuity
52
52
Permanent remote reset
53
53
Timing cycle too short
99
88
Internal error/negative flame current
* Display on BCU..L upon activation of the air valve during program step x
** FS = input/output, safety circuit, NFS = input/output, control system
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