229
8 Options
Bit Pattern Actual Value O
2
Bit Pattern Operating Mode CO Controller
Bit Pattern Cause of Failure CO Controller
1. lower monitoring band misplaced 0x0080
Half air deficiency is pending 0x0100
O
2
actual value: Invalid actual 0x0400
Firing-rate is out of control range 0x0800
Static air deficiency is pending 0x1000
Air deficiency: Taking countermeasures
dynamically is active
0x2000
Probe dynamics: Taking countermeasures
dynamically is active
0x4000
Monitoring correction output 0x8000
State of actual value O
2
Active (Bit pattern)
Underflow 0x0200
Overflow 0x0400
MAINTENANCE MODE 0x0800
Sending a substitute value 0x1000
Warning: Measurement value 0x2000
Failure: Measurement value 0x4000
Measurement value not valid 0x8000
Operating mode CO controller Active (Bit pattern)
CO controller is OFF 0x0000
CO controller is released in actual curve set 0x0001
CO controller in standby for correction control 0x0002
CO controller takes over the correction control while the burner in ON 0x0004
CO controller transfers ’inactive’ correction value, because O
2
trim shall
not take over.
0x8000
Failure cause Active (Bit pattern)
No valid threshold information on LSB available 0x0001
Probe voltage out of monitoring range 0x0002
Probe offset voltage out of monitoring range, or no dynamics 0x0004
Cell resistance out of monitoring range 0x0008
Cell temperature out of monitoring range 0x0010
No probe dynamics visible 0x0020
Internal firing-rate out of parameter set firing-rate ranges. 0x0040
Watchdog processor deactivates CO controller 0x0080
LSB signal deactivates CO controller 0x0100
O
2
monitoring deactivates CO controller 0x0200
Effective probe voltage UCO
e
out of monitoring range 0x0400
CO controller is switched OFF temporarily, because CO threshold sig-
nal is active for too long.
0x0800
Failure cause Active (Bit pattern)
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