DIVA HC24
14
EN
cod.
3541E901 - Rev. 00 - 12/2015
5. TECHNICAL DATA AND CHARACTERISTICS
Table. 3 - Legend cap. 5
5.1 Dimensions and connections
fig. 12 - Front view
F07
Air pressure switch (contacts
closed on activation of fan)
Air pressure switch
contact open
Check the pressure switch / Fan /
Fan socket
Faulty air pressure
switch wiring
Check the wiring
Wrong baffle
Make sure the baffle is correct
Flue obstructed or
not correctly sized
Check the length of the flues / Clean
the flues
A09
Gas valve fault
Wiring disconnected Check the wiring
Faulty gas valve
Check the gas valve and replace it if
necessary
F10
Delivery sensor fault
Sensor damaged
Check the wiring or replace the sen-
sor
Wiring shorted
Wiring disconnected
F11
DHW sensor fault
Sensor damaged
Check the wiring or replace the sen-
sor
Wiring shorted
Wiring disconnected
A16
Gas valve fault
Wiring disconnected Check the wiring
Faulty gas valve
Check the gas valve and replace it if
necessary
A23
Card parameter fault
Wrong card parame-
ter setting
Check the card parameter and mod-
ify it if necessary
A24
Card parameter fault
Wrong card parame-
ter setting
Check the card parameter and mod-
ify it if necessary
F34
Supply voltage under 140VAC
Electric mains trou-
ble
Check the electrical system
F35
Faulty mains frequency
Electric mains trou-
ble
Check the electrical system
F37
Incorrect system water pres-
sure
Pressure too low
Fill the system
Water pressure
switch damaged or
not connected
Check the sensor
F43
Exchanger protection activa-
tion.
No system H
2
O cir-
culation
Check the circulating pump
Air in the system
Vent the system
F50
Controller
DBM32
fault
Controller
DBM32
internal error
Check the earth connection and
replace the controller if necessary.
F51
Controller
DBM32
fault
Controller
DBM32
internal error
Check the earth connection and
replace the controller if necessary.
Fault
code
Fault
Possible cause
Cure
7
Gas inlet
49
Safety thermostat
10
System delivery
56
Expansion tank
11
System return
74
System filling cock
14
Safety valve
78
Anti-backflow device
19
Combustion chamber
81
Ignition and detection electrode
22
Burner
95
Diverter valve
27
Copper exchanger for heating and hot water
114
Water pressure switch
32
Heating circulating pump
126
Fume thermostat
34
Heating temperature sensor
209
Hot water tank delivery
36
Automatic air vent
210
Hot water tank return
44
Gas valve
241
Automatic bypass
700
680
400
117
120
Ø
131
