54
FAULT-FINDING CHART
1
NO IGNITION
2
CRACKLING
IGNITION
3
SMELL OF GAS
4
MELL OF
UNBURNT GAS
AND BAD
BURNER
COMBUSTION
5
CONDENSATION
IN THE BOILER
6
COLD
RADIATORS IN
WINTER
FAULT
CAUSE
REMEDY
A
. Gas cock closed
B
. Boiler locked out
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
. Open gas cock
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
circulator
H
. Adjust thermostat setting on desired
temperature.
A
. Irregular flame
B
. Insufficient or wrongly adjusted
gas delivery
A
. Call technical service
B
. Call technical service
A
. Leak in pipes circuit (inside and
outside boiler)
A
. Check the external pipes
Check the internal pipes
Call technical service
A
. Flue cross-section or height with
joint not suitable for the boiler
B
. Excessive gas consumption -
combustion is imperfect
C
. Flames tend to detach
D
. Flames have yellow tips
A
. Replace unsuitable components
B
. Adjust gas delivery
C
. Check/adjust gas valve
pressure stabilizer
D
. Check that air volutes and Venturi
cones of the burner are clean
If items
A-B-C-D
have been checked
with negative result call technical
service
A
. Flue cross-section or height not
suitable (excessive size)
B
. Boiler operating at low temperature
A
. Replace unsuitable components.
B
. Adjust boiler thermostat at a higher
temperature and check if air intake
pipe/flue exhaust connection is
correct.
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
. Unblock with a screwdriver and
check electrical supply
