FAULT-FINDING CHART
FAULT
1 NO IGNITION
2 CRACKLING
IGNITION
3 SMELL OF GAS
4 SMELL OF
UNBURNT GAS
AND BAD
BURNER
COMBUSTION
5 CONDENSATION
IN THE BOILER
6 COLD
RADIATORS IN
WINTER
CAUSE
A. Gas tap closed
B. "Lock-out" button on
C. No flame detection
D. No ignition spark
E. Air inside pipes
F. Safety thermostat intervention
G. Water not circulating
H. Boiler water temperature higher than
figure set on the adjustment thermostat
A. Irregular flame
B. Insufficient or wrongly adjusted gas
flow-rate
A. Leak in pipes circuit
(inside and outside boiler)
A. Flue cross-section or height with joint
not suitable for the boiler
B. Excessive
gas
Combustion is imperfect
C. Flames tend to detach
D. Flames have yellow tips
A. Flue cross-section or height not suitable
(excessive size)
B. Boiler operating at low temperature
A. Function selector on summer position
B. Room thermostat set too low or faulty
C. System or radiators closed
D. Circulator blocked
A. Open gas tap
B. Reset by pressing
C. Neutral and phase inverted
D. Call technical service
E. Repeat ignition
F. Press reset push-button
G. Adjust boiler pressure and check
H. Adjust thermostat setting on desired
A. Call technical service
B. Call technical service
A. Check the external pipes
A. Replace unsuitable components
B. Adjust gas flow-rate
consumption
-
C. Check/adjust gas valve pressure
D. Check that air volutes and Venturi cones
If items A-B-C-D have been checked with
negative result call technical service
A Replace unsuitable components.
B. Adjust boiler thermostat at a higher
A. Place it in winter position
B. Adjust thermostat at a higher tempera
C. Check if system gate valves and
D. Unblock with a screwdriver and check
REMEDY
circulator
temperature.
Check the internal pipes
Call technical service
stabilizer
of the burner are clean
temperature and check if air intake
pipe/flue exhaust connection is correct.
ture or replace it.
radiator taps are opened.
If item C has been checked with negati
ve result call technical service
electrical supply
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