32
14 Trouble shooting
Faults
Cause
Remedy
no power supply
Faulty fuse
Check fuses and connections.
The 6.3 A fuse is located under the control
panel. For replacing the fuse open the boiler
front door, unscrew and remove the black
cover to the fuse cabinet (see Fig. 7, pos. 2).
Check thermostat settings.
during commissioning fault report
by ignition automat
Phase and neutral have been
wrongly connected
Connect phase to clamp L, and neutral
conductor to clamp N (at plug).
Air in gas pipe
Vent air from gas pipe.
Fault report by ignition automat
shortly after burner was activated
Absent or insufficient ionization
current.
Required minimum ionization
current value 5 µA
Measure ionization current.
Check cable connection in ignition automat
and to the electrode. Check whether the gas
outlet of the burner lance under the ionization
electrode is not clogged, and clean if
necessary.
Dirty or faulty ionization electrode Clean or replace ionisation electrode.
Ignition absent, faulty ignition
transformer
Replace ignition transformer.
Faulty ignition automat
Replace ignition automat.
Fault in ignition automat with
irregular intervals
Wrong setting of ignition
electrode
Check distance between ignition electrode
and burner lance and earth rod.
Cable of ignition electrode worn
out
Replace ignition electrode, or adjust distance
to earth rod if necessary.
Pressure regulator of gas
regulating valve doesn`t open
temporarily
Exchange pressure controller. Check gas
flow pressure controller, whereas the gas
pressure controller may also have been
switched off.
Faulty ignition automat
Replace ignition automat.
Noisy burner when activated
Wrong setting of ignition
electrode
Check distance between ignition electrode
and burner lance and earth rod.
Faulty contact of ignition cables
Check connection to ignition transformer and
electrode.
Faulty insulator of the ignition
electrode
Replace ignition electrode.
Cable of ignition electrode worn
out
Replace ignition electrode, or, if necessary
adjust distance between earth rod.
Safety temperature limiter
switches off
Faulty boiler thermostat
Replace thermostat.
Burner burns with yellow flames
Dirty burner or heat exchanger
Carry out boiler / burner maintenance.
When the aforementioned and all other malfunctions* occur we recommend consultation of a specialist and have a
specialist carry out the necessary work.
* In case of malfunctioning please contact the manufacturer of the installation.
