QUADRIFOGLIO B
96
EN
cod. 3541D501 - Rev. 03 - 12/2013
To access the burner observe the following instructions.
1.
Remove the top front panel and cover (fig. 68).
2.
Remove the four nuts and washers (fig. 69).
3.
Open the burner door (fig. 69).
fig. 68
fig. 69
B
After opening the burner door and hooking it to the support arms a pin
must (compulsory) be inserted in the safety hole (ref. A - fig. 69), to avoid
the risk of accidental release during maintenance operations.
To close it, repeat these operations in reverse order.
B
Tighten down the 4 nuts (fig. 70).
Then check the perfect tightness of the gas circuit.
fig. 70
4.4 Troubleshooting
Diagnostics
The boiler is equipped with an advanced self-diagnosis system. In the case of a boiler
fault, the display will light up, indicating the fault code and, in case of connection in cas-
cade, the number of the module.
There are faults that cause permanent shutdown (marked by the symbol
OK
to reset): to
restore operation, just press the
OK button
for 1 second or
RESET
on the remote timer
control (optional) if installed; if the boiler fails to start, the fault must be eliminated first.
Other faults cause temporary shutdowns which are automatically reset as soon as the
value returns within the boiler's normal working range.
Table of faults
Table. 4 - List of faults
A
Fault
code
Fault
Possible cause
Cure
A01
No burner ignition
No gas
Check the regular flow of gas to the
boiler and that the air has been
eliminated from the pipes
Ignition/detection electrode fault
Check the wiring of the electrode and
that it is correctly positioned and free
of any deposits
Faulty gas valve
Check the gas valve and replace it
if necessary
Insufficient gas supply pressure
Check the gas supply pressure
Trap blocked
Check the trap and clean it if
necessary
Faulty ignition transformer (only
models B 220 and B 320)
Check and replace it if necessary
A02
Flame present signal with
burner off
Electrode fault
Check the ionisation electrode wiring
Card fault
Check the card
A03
Overtemperature protection
intervention
Heating sensor damaged
Check the correct positioning and
operation of the heating sensor
No water circulation in the system
Check the circulating pump
Air in the system
Vent the system
A04
Fume extraction duct safety
device intervention
Fault F07 generated 3 times in the
last 24 hours
See fault F07
A05
Fan protection intervention
Fault F15 generated for 1 hour
(consecutive)
See fault F15
A06
No flame after ignition stage
(6 times in 4 minutes)
Ionisation electrode fault
Check the position of the ionisation
electrode and replace it if necessary
Flame unstable
Check the burner
Gas valve Offset fault
Check the Offset adjustment at
minimum power
air/fume ducts obstructed
Remove the obstruction from flue,
fume exhaust ducts and air inlet and
terminals
Trap blocked
Check the trap and clean it if
necessary
F07
High fume temperature
Flue partially obstructed or
insufficient
Check the efficiency of the flue, fume
extraction ducts and outlet terminal
Fume sensor position
Check the correct positioning and
operation of the fume sensor
F10
Delivery sensor 1 fault
Sensor damaged
Check the wiring or replace the sensor
Wiring shorted
Wiring disconnected
F11
Return sensor fault
Sensor damaged
Check the wiring or replace the sensor
Wiring shorted
Wiring disconnected
F12
DHW sensor fault
Sensor damaged
Check the wiring or replace the sensor
Wiring shorted
Wiring disconnected
F13
Fume sensor fault
Sensor damaged
Check the wiring or replace the sensor
Wiring shorted
Wiring disconnected
F14
Delivery sensor 2 fault
Sensor damaged
Check the wiring or replace the sensor
Wiring shorted
Wiring disconnected
F15
Fan fault
No 230V power supply
Check the 3-pin connector wiring
Tachometric signal interrupted
Check the 5-pin connector wiring
Fan damaged
Check the fan
F34
Supply voltage under 170V Electric mains trouble
Check the electrical system
F35
Faulty mains frequency
Electric mains trouble
Check the electrical system
F37
Pressure switch contact
open
Low system pressure
Check the system water pressure
F39
External probe fault
Probe damaged or wiring shorted
Check the wiring or replace the sensor
Probe disconnected after activating
the sliding temperature
Reconnect the external probe or
disable the sliding temperature
