12
4 Operation
4.4
What Happens if a Fault Occurs in the O
2
Controller?
In the event of a malfunction, the display shows a warning and the O
2
trim is deactivated. The
specified base value "without control” (correction value at deactivated O2 trim) or the one for
"air deficiency” (correction value at air deficiency) is set. The display shows the running text
"O
2
trim disturbed”. The burner doesn’t shut down. Set the selector switch to "Status" to call
up the corresponding error code.
4.5
Resetting O
2
Errors
Each new burner start-up resets O
2
fault automatically. This is permissible, because a 100%
O
2
measurement test is performed at each start-up. Manual resetting of O
2
fault is possible at
any time, as follows:
4.6
Calling Fault History O
2
trim
Display:
The display hides the O
2
history automatically after 5 sec. O
2
trim faults, which last for more
than 30 sec are stored. They are only stored in the EEPROM once the fault is cleared up or
the ETAMATIC V leaves the operating mode or control or base firing rate.
4.7
How to switch the Display
NOTICE
Before setting the O
2
trim, the compound must be completely programmed.
Press key 11 ENTER → The display shows a plain text message about the cause of
the error.
Press key RESET
ETAMATIC V in O
2
trim mode
If not, switch over to O
2
trim mode
Press key 15 M once
Press key ENTER and call up the cause of fault (mandatory!)
Press key 7
Switch over to fuel/air ratio control mode, if necessary press M.
Use key 4 and 5 to browse the fault history.
1
147
1
000 487
current fault
internal firing
rate
curve set
operating hours
With key M you can switch between compound display, O
2
display (if activated), flame
intensity and internal firing rate controlle (if activated).
Содержание ETAMATIC V
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