Yes
Ignition
No
Fault
Check ignition
module (control
voltage 230 V
across plugs
"X2.1" and "X2.2"
F4
Yes
Gas combination
valve opens
No
Fault
Check the gas
combination valve
(control voltage
230 V); check the
gas supply pres-
sure
F4
Yes
Ionisation cur-
rent builds
(higher than
5 µA)
No
Fault
Check the ionisa-
tion current,
check the elec-
trode adjustment
and the gas pipe
for airlocks.
Symbol
A
F4
Yes
Burner in opera-
tion
Stops below set
boiler water tem-
perature and re-
starts
Check flue gas
system for sound-
ness (flue gas re-
circulation),
check gas flow
pressure
Yes
Automatic cali-
bration of the
combustion con-
trol unit
No
Fault
Check the electri-
cal connecting
cable and the io-
nisation electrode
EB
Further details regarding the individual steps
(cont.)
12
Initial start-up, inspection, maintenance
5692
569
GB
Summary of Contents for Vitodens 300
Page 111: ...Parts lists cont 111 Parts lists 5692 569 GB...
Page 112: ...Parts lists cont 112 Parts lists 5692 569 GB...
Page 113: ...Parts lists cont 113 Parts lists 5692 569 GB...
Page 114: ...Parts lists cont 114 Parts lists 5692 569 GB...
Page 115: ...Parts lists cont 115 Parts lists 5692 569 GB...
Page 127: ...127 5692 569 GB...
