Ferroli Pegasus F3 119 Installation And Maintenance Instructions Manual page 19

No rise in temperature
while the boiler is working
System water temperature is
too high or too low
Flare-ups at the burner
Delayed ignition
Regulating thermostat restarts
with too high a temperature
difference
Boiler forms condensate
Boiler becomes dirty quickly
Boiler shuts off
for no apparent reason
Remember: To avoid unnecessary expense, before contacting Service Department, make sure that
any boiler failure is not due to the absence of electric power or gas supply.
Supplied By www.heating spares.co Tel. 0161 620 6677
Make sure the regulating thermostat works.
Check that gas consumption is not below specifica-
tions.
Check that the boiler is perfectly clean.
Check that the boiler rating is in proportion to the
system.
Check the functioning of the regulating
thermostat.
Check the pump is not blocked.
Make sure the pump characteristics are in proportion
to the size of the system.
Check that the gas pressure is sufficient
and that the boiler body is not dirty.
Replace the thermostat .
Check that the boiler is not running at too low a
temperature.
Check that gas consumption is normal. Make sure the
burner flame is well adjusted.
Check that the burner flame is adjusted properly and
that gas consumption is in proportion to the boiler
power.
Gas pressure switch tripped (5 mbar).
Safety thermostat tripped after safe operating tempera-
ture has been exceeded.
Pilot injector is blocked or dirty.
Electrodes are dirty or badly positioned (see fig. 8b).
Pegasus F3
19