16
FAULT-FINDING CHART
1 NO IGNITION
2 CRACKLING
IGNITION
3 SMELL OF GAS
4 MELL OF
UNBURNT GAS
AND BAD BUR-
NER COMBU-
STION
5 CONDENSATION
IN THE BOILER
6 COLD RADIA-
TORS
IN
WINTER
FAULT
CAUSE
REMEDY
A. Gas cock closed
B. “Lock-out” button locked
C. No fl ame detection
D. No ignition spark
E. Air inside pipes
F. Safety thermostat intervention
A. Open gas cock
B. Reset by pressing
C. Call technical service
D. Call technical service
E. Repeat ignition
F Wait for the temperature to drop
A. Irregular fl ame
B. Insuffi cient or wrongly adjusted
gas delivery
A. Call technical service
B. Call technical service
A. Leak in pipes circuit (inside and
outside boiler)
A. Call technical service
A. Flue section or height with joint not
suitable for the boiler
B. Excessive gas consumption - combustion
state is imperfect
C. Flames tend to move away or have
yellow
tips
A. Call technical service
B. Call technical service
C. Call technical service
A. Flue cross-section or height not
suitable (excessive size)
B. Boiler operating at low temperature
A Call technical service
B Adjust boiler thermostat at a higher
temperature.
A. Function selector on summer position
B. Room thermostat set too low or faulty
C. System or radiators closed
D. Circulator blocked
A. Place it in winter position
B. Adjust thermostat at a higher
temperature or replace it.
C. Check if system gate valves and
radiator cocks are opened.
If item C has been checked with
negative result call technical service
D. Call technical service
