37
Yes
Ionisation current builds
No
Fault F.369, F.380
Check distance of ionisation
electrode on burner gauze
assembly.
Purge the gas line.
Yes
Burner in operation
No
Shuts down below the set
boiler water temperature and
restarts immediately.
Check the flue system for
tightness (flue gas recircula-
tion). Check gas flow pres-
sure.
Yes
Automatic calibration of
the combustion controller
No
Fault F.62, F.373
Ensure adequate heat trans-
fer. Reset device.
Fault F.346, F.375, F.377
Check gap between ionisa-
tion electrode and burner
gauze assembly.
Check flue system. Remove
flue gas recirculation if re-
quired.
Reset device.
Operating instructions
For further details regarding faults, see page "Trouble-
shooting".
Setting the max. heating output
A limit can be set on the maximum heating output for
heating mode
. The limit is set via the modulation
range.
Note
The flow rate must be checked before the max. heat-
ing output can be adjusted. Ensure adequate heat
transfer.
Tap the following buttons:
1.
and
OK
– press simultaneously for approx. 4 s,
then release.
2.
Use
/
to select
"System configuration"
.
3. OK
4.
Use
/
to select
"Boiler"
.
5. OK
6.
Use
/
to select parameter
596.0
"Maximum
heating output"
.
7. OK
8.
Use
/
to set the required value in % of rated
heating output. Delivered condition 100 %.
9. OK
Commissioning, inspection, maintenance
Function sequence and possible faults
(cont.)
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