DOMIproject F 24 D
31
EN
cod. 3540V401 - 05/2012 (Rev. 00)
5. TECHNICAL DATA AND CHARACTERISTICS
Table. 9 - Key of figures cap. 5
5.1 General view and main components
fig. 18 - General view
5.2 Plumbing diagrams
fig. 19 - Heating Circuit
fig. 20 - DHW Circuit
F39
External probe fault
Probe damaged or wiring shorted Check the wiring or replace the sensor
Probe disconnected after activat-
ing the sliding temperature
Reconnect the external sensor or disa-
ble the sliding temperature
A41
Sensor positioning
Delivery sensor or DHW sensor
detached from the pipe
Check the correct positioning and
operation of the sensors
F42
Heating sensor fault
Sensor damaged
Replace the sensor
F43
Exchanger protection trips.
No H
2
O system circulation
Check the circulating pump
Air in the system
Vent the system
F50
Gas valve fault
Modulating Operator wiring discon-
nected
Check the wiring
Faulty gas valve
Check the gas valve and replace it if
necessary
A51
Poor combustion fault
Inlet/exhaust flue obstruction
Check the flue
5
Sealed chamber
32
Heating circulating pump
7
Gas inlet
36
Automatic air vent
8
Domestic hot water outlet
38
Flowswitch
9
Cold water inlet
42
DHW temperature sensor
10
System delivery
44
Gas valve
11
System return
56
Expansion tank
14
Safety valve
72
Room thermostat (not supplied)
16
Fan
74
System filling cock
19
Combustion chamber
81
Ignition and detection electrode
20
Burner assembly
114
Water pressure switch
21
Main nozzle
138
External probe
22
Burner
139
Room unit
26
Combustion chamber insulation
187
Fume baffle
27
Copper exchanger for heating and hot water
278
Double sensor ( Heating)
28
Fume manifold
340
Bypass pipe
29
Fume outlet manifold
Code
fault
Fault
Possible cause
Cure
56
29
187
42
28
27
19
26
36
16
5
20
21
22
81
114
14
10
8
7
38 9
11
32
44
74
278
340
278
11
9
8
10
42
27
38
74
36
114
14
56
32
340
340
278
11
9
8
10
42
27
38
74
36
114
14
56
32
Summary of Contents for DOMIproject F 24 D
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