Troubleshooting; List Of Faults; General View And Main Components - Joannes CLIZIA D 24 A Instrucciones De Uso, Instalación Y Mantenimiento

CLIZIA D 24 A

4.4 Troubleshooting

Diagnostics
The boiler is equipped with an advanced self-diagnosis system. In case of a boiler fault,
the display will flash together with the fault symbol (detail 11 - fig. 1) indicating the fault
code.
There are faults that cause permanent shutdown (marked with the letter "A"): to restore
operation, press the RESET button (detail 6 - fig. 1) for 1 second or RESET on the op-
tional remote timer control if installed; if the boiler fails to start, it is necessary to eliminate
the fault.
Faults marked with the letter "F" cause temporary shutdowns that are automatically reset
as soon as the value returns within the boiler's normal working range.

List of faults

Table. 2
Fault
Fault Possible cause
code
No gas
Ignition/detection electrode fault
A01 No burner ignition
Faulty gas valve
Gas valve wiring disconnected
Ignition power too low
Electrode fault
Flame present signal with
A02
burner off
Card fault
Heating sensor damaged
Overtemperature protection
A03
activation No water circulation in the system Check the circulating pump
Air in the system
Fume thermostat contact open
Fume thermostat activated
(after activation of the fume Wiring disconnected
F04
thermostat, boiler operation
Flue obstructed or not correctly
is prevented for 20 minutes)
sized
F05 Card parameter fault Wrong card parameter setting
Low pressure in the gas system
No flame after the ignition
A06
phase
Burner minimum pressure setting Check the pressures
F07 Card parameter fault Wrong card parameter setting
Wiring disconnected
A09 Gas valve fault
Faulty gas valve
Sensor damaged
F10 Delivery sensor 1 fault Wiring shorted
Wiring disconnected
Sensor damaged
F11 DHW sensor fault Wiring shorted
Wiring disconnected
Sensor damaged
F14 Delivery sensor 2 fault Wiring shorted
Wiring disconnected
Wiring disconnected
A16 Gas valve fault
Faulty gas valve
F20 Card parameter fault Wrong card parameter setting
A21 Card parameter fault Wrong card parameter setting
A23 Card parameter fault Wrong card parameter setting
A24 Card parameter fault Wrong card parameter setting
F34 Supply voltage under 180V. Electric mains trouble
F35 Faulty mains frequency Electric mains trouble
Pressure too low
Incorrect system water pres-
F37
Water pressure switch damaged or
sure
not connected
Probe damaged or wiring shorted Check the wiring or replace the sensor
F39 External probe fault
Probe disconnected after activat-
ing the sliding temperature
Delivery sensor or DHW sensor
A41 Sensor positioning
detached from the pipe
F42 Heating sensor fault Sensor damaged
No system H
F43 Exchanger protection trips.
Air in the system
Modulating Operator wiring discon-
nected
F50 Gas valve fault
Faulty gas valve
Cure
Check the regular gas flow to the boiler
and that the air has been eliminated
from the pipes
Check the wiring of the electrode and
that it is correctly positioned and free
of any deposits
Check the gas valve and replace it if
necessary
Check the wiring
Adjust the ignition power
Check the ionisation electrode wiring
Check the card
Check the correct positioning and
operation of the heating sensor
Vent the system
Check the thermostat
Check the wiring
Check the flue
Check the card parameter and modify
it if necessary
Check the gas pressure
Check the card parameter and modify
it if necessary
Check the wiring
Check the gas valve and replace it if
necessary
Check the wiring or replace the sensor
Check the wiring or replace the sensor
Check the wiring or replace the sensor
Check the wiring
Check the gas valve and replace it if
necessary
Check the card parameter and modify
it if necessary
Check the card parameter and modify
it if necessary
Check the card parameter and modify
it if necessary
Check the card parameter and modify
it if necessary
Check the electrical system
Check the electrical system
Fill the system
Check the sensor
Reconnect the external sensor or disa-
ble the sliding temperature
Check the correct positioning and
operation of the sensors
Replace the sensor
O circulation
Check the circulating pump
2
Vent the system
Check the wiring
Check the gas valve and replace it if
necessary
cod. 3541C830 - Rev. 00 - 09/2012
5. TECHNICAL DATA AND CHARACTERISTICS
Table. 3 - Key of figures cap. 5
7 Gas inlet
8 DHW outlet
9 Cold water inlet
10 System delivery
11 System return
14 Safety valve
19 Combustion chamber
22 Burner
27 Copper exchanger for heating and hot water
32 Heating circulating pump
36 Automatic air vent
37 Cold water inlet filter
38 Flow switch
39 Water flow limiter
42 DHW temperature sensor

5.1 General view and main components

126
78
278
81
22
194
95
290
10 42 8
fig. 13 - General view CLIZIA D 24 A
44 Gas valve
56 Expansion tank
72 Room thermostat (not supplied)
74 System filling cock
78 Anti-backflow device
81 Ignition and detection electrode
95 Diverter valve
114 Water pressure switch
126 Fume thermostat
138 External probe (not supplied)
139 Remote Timer Control (optional)
194 DHW water exchanger
241 Automatic bypass
278 Double sensor (Safety + Heating)
290 Antiwind grille (optional)
44 7 39 9 38 74 11 32
37
EN
56
27
19
14
36
114
15