- 13 -
OPERATING FAULTS
2 - MAINTENANCE
Maintenance alarms can be automatically triggered,
indicating that maintenance jobs are due. The fol-
lowing reasons for maintenance alarms can be deli-
vered:
- Interval of burner hours run since last regular ser-
vice visit exceeded.
- Interval of the number of startups since last regu-
lar service visit exceeded.
- Number of months since last regular service visit
exceeded.
The alarm displayed is always the maintenance
alarm that occurred first.
There is no storage for the maintenance alarms sin-
ce all pending alarms can be checked at any time
via the counter readings or the relevant parameters.
If a maintenance alarm occurs, an error code "105
maintenance" appears on the dipslay of the boiler
and / or room unit.
This code does not give precise information on
maintenance but is only a general maintenance no-
te.
These maintenance alarms are a priority lower than
that of the error codes to ensure the error codes pre-
vail.
The maintenance alarm is sent until the enduser has
acknowledged the message or the heating engineer
has rectified the fault.
The maintenance alarm does not provide detailed
information about the reason for the fault. Details
can be displayed using parameter "WartungsCode"
(QAA 73 setting : 726).
Le maintenance code can also be viewed on the dis-
play of the boiler (b0).
Parameter "WartungsEinstellungen" (QAA 73 set-
ting : 630) permits or suppresses the generation of
maintenance alarms.
The subdivision of parameter "WartungsEinstellun-
gen" by bit is shown in the following table :
2.1 - Maintenance alarm
2.2 - Maintenance code
2.3 - Coding of maintenance alarms
Maintenance
alarm
Maintenance
code
Internal
error
code
b0
Meaning
–
0
–
No maintenance
alarm
105 1
560
Burner hours run
105 2
561
Startups
105 3
562
Months-service
2.4 - General activation of maintenance
alarms
Bit0
1 = general activation of maintenance alarms
Bit1
1 = single reset of hours run maintenance alarm
Bit2
1 =
single reset of startup maintenance alarm
Bit3
1 =
single reset of months- service maintenance
alarm
Bit6
1 =
total reset for all maintenance alarms
Summary of Contents for THI 2-17 B 120
Page 19: ... 19 V PARTS LISTS THI 2 17 B 120 ...
Page 23: ... 23 PARTS LISTS CONTROL BOX ...
