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ATLAS D32 CONDENS K130 UNIT
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.
There are faults the cause permanent shutdowns (marked with the letter "A"): to restore
operation, just press the RESET button (detail 8 - fig. 1) for 1 second or use the RESET
on the remote timer control (optional) if installed; if the boiler does not restart, it is nec-
essary to eliminate the fault indicated in the operation LEDs.
Other faults cause temporary shutdowns (marked with the letter "F") which are automat-
ically reset as soon as the value returns within the boiler's normal working range.
Table. 6 - List of faults
Fault
Fault
Possible cause
code
Pump blocked
Faulty electric motor
Faulty oil valve
No fuel in tank, or water on bottom
Oil line feed valves closed
Dirty filters (line-pump-nozzle)
Pump unprimed
Ignition electrodes not properly adjusted,
or dirty
Nozzle clogged, dirty or deformed
A01
Burner block
Unsuitable head and shutter adjustments Adjust
Faulty electrodes or earthed
Faulty ignition transformer
Faulty electrode wires or earthed
Electrode wires deformed by high
temperature
Faulty valve or transformer electrical
connections
Broken pump-motor joint
Pump inlet connected to return pipe
Faulty photoresistance
Dirty photoresistance
Photoresistance short circuit
Flame present signal
A02
Extraneous light strikes the
with burner off
photoresistance
Heating sensor damaged
Overtemperature
A03
protection activation
No water circulation in the system
Air in the system
A04
Card parameter fault
Wrong card parameter setting
Preheater fault (the
Preheater fault
F07
contact does not close
Wiring disconnected
in 120 seconds)
F09
Card parameter fault
Wrong card parameter setting
Sensor damaged
F10
Delivery sensor 1 fault
Wiring shorted
Wiring disconnected
Sensor damaged
F11
DHW sensor fault
Wiring shorted
Wiring disconnected
F12
Card parameter fault
Wrong card parameter setting
Sensor damaged
F14
Delivery sensor 2 fault
Wiring shorted
Wiring disconnected
F16
Card parameter fault
Wrong card parameter setting
Supply voltage under
F34
Electric mains trouble
170V.
Faulty mains
F35
Electric mains trouble
frequency
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 temperature
Fault
code
F40
A41
F42
F47
Circulating pump diagnostics
Some faults linked to the circulating pump are signalled by the LED located around the
speed selector (fig. 41).
Cure
Replace
Replace
Replace
Refill with fuel or suck the water
Open
Clean
Prime and find the cause of
unpriming
Adjust or clean them
Replace
Replace
Replace
Replace
Replace and protect
Check
Table. 7 - Circulating pump LED indications
Replace
Correct the connection
Replace
Clean the photoresistance
Replace the photoresistance
Eliminate the light source
Check the correct positioning and
operation of the heating sensor
Check the circulating pump
(See table 7)
Vent the system
Check the card parameter and
modify it if necessary
Check the preheater
Check the wiring
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 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 sensor or
disable the sliding temperature
cod. 3541G840 - Rev. 01 - 10/2016
Fault
Possible cause
Incorrect system water
Pressure too high
pressure
Sensor positioning
Delivery sensor not inserted in boiler shell
Heating sensor fault
Sensor damaged
System water pressure
Wiring disconnected
sensor fault
fig. 41
Off
Min
.
Circulating pump on STANDBY
1
I
4
II
7
III
Green ON
Circulating pump Working
Green Flashing
Air venting cycle
Green/Red alternating
Circulating pump blocked due to external causes:
- Overvoltage (>270V)
- Insufficient voltage (<160V)
- Motor overload
Red Flashing
Circulating pump blocked due to internal causes:
- Motor blocked
- Damaged electronics
Cure
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
53
EN
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