
32
Display
Measure
Control unit issues
a heat demand
No
Increase set value
and ensure heat is
drawn off
Yes
Ignition
No
Fault
"F4"
Check the ignition
module connec-
tion
Yes
Gas train opens
No
Fault
"F4"
Check the gas
train (control volt-
age 230 V); check
the gas supply
pressure
Yes
Ionisation current
builds (higher than
2µA)
Symbol
A
No
Fault
"F4"
Check the ionisa-
tion current, check
the electrode ad-
justment and the
gas line for air-
locks.
Yes
Burner in opera-
tion
No
Stops below the set
boiler water tem-
perature and re-
starts immediately
Check the flue sys-
tem for tightness
(flue gas recircula-
tion), check the
gas flow pressure
Troubleshooting
Function sequence and possible faults
5441 514 UAE
Содержание Vitopend 100-W
Страница 47: ...47 200 201 201 202 034 019 035 018 017 021 024 024 Parts lists Parts lists cont 5441 514 UAE Service ...
Страница 49: ...49 116 048 081 011 082 080 Parts lists Parts lists cont 5441 514 UAE Service ...
Страница 50: ...50 108 006 065 104 064 049 044 101 101 118 007 102 104 043 Parts lists Parts lists cont 5441 514 UAE ...
Страница 52: ...52 316 317 318 319 320 314 315 316 Parts lists Parts lists cont 5441 514 UAE ...
Страница 53: ...53 329 330 331 332 333 334 336 335 337 328 Parts lists Parts lists cont 5441 514 UAE Service ...