ATLAS D 42 K 130
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 22 - fig. 1) indicating the fault
code.
Some faults cause permanent shutdown (marked with the letter "A"): to restore opera-
tion, press the RESET button (detail 8 - fig. 1) for 1 second or RESET on the optional
remote timer control if installed; if the boiler fails to restart, it is necessary to eliminate the
fault indicated by the operation LED's.
other faults (indicated with the letter "F") cause temporary shutdowns which are automat-
ically reset as soon as the value returns within the boiler's normal operation range.
Table. 2 - List of faults
Fault
Fault
Possible cause
code
Burner block
(RESET OCCURS
A01
Refer to the burner manual
ONLY ON THE
BURNER)
Heating sensor damaged
Overtemperature protec-
A03
No water circulation in the
tion activation
system
Air in the system
Wrong card parameter set-
A04
Card parameter fault
ting
F07
Wiring fault
Connector X5 not connected Check the wiring
Wrong card parameter set-
F09
Card parameter fault
ting
Sensor damaged
F10
Delivery sensor 1 fault
Wiring shorted
Wiring disconnected
Sensor damaged
F11
DHW sensor fault
Wiring shorted
Wiring disconnected
Wrong card parameter set-
F12
Card parameter fault
ting
Connector X12 not con-
F13
Wiring fault
nected
Sensor damaged
F14
Delivery sensor 2 fault
Wiring shorted
Wiring disconnected
Wrong card parameter set-
F16
Card parameter fault
ting
Supply voltage under
F34
Electric mains trouble
170V.
F35
Faulty mains frequency
Electric mains trouble
Pressure too low
Incorrect system water
F37
pressure
Sensor damaged
Probe damaged or wiring
shorted
F39
External probe fault
Probe disconnected after
activating the sliding tem-
perature
Incorrect system water
F40
Pressure too high
pressure
Delivery sensor not inserted
A41
Sensor positioning
in boiler shell
F42
Heating sensor fault
Sensor damaged
System water pressure
F47
Wiring disconnected
sensor fault
Cure
Check the correct positioning and operation
of the heating sensor
Check the circulating pump
Vent the system
Check the card parameter and modify it if
necessary
Check the card parameter and modify it if
necessary
Check the wiring or replace the sensor
Check the wiring or replace the sensor
Check the card parameter and modify it if
necessary
Check the wiring
Check the wiring or replace the sensor
Check the card parameter and modify it if
necessary
Check the electrical system
Check the electrical system
Fill the system
Check the sensor
Check the wiring or replace the sensor
Reconnect the external probe or disable the
sliding temperature
Check the system
Check the safety valve
Check the expansion tank
Check the correct positioning and operation
of the heating sensor
Replace the sensor
Check the wiring
cod. 3540S464 - Rev. 01 - 10/2012
5. TECHNICAL DATA AND CHARACTERISTICS
5.1 Dimensions, connections and main components
500
292
97
143
178
233
10
209
192
210
10
14
32
278
130
56
11
209
192
A
210
fig. 18 - Dimensions, connections and main components
Ø 115
293
180
275
Ø 120÷130
105
11
950
EN
246
36
29