ENERGY TOP W 60/70/80/125
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 20 - fig. 1) indicating the fault
code.
There are faults that cause permanent shutdown (marked with the letter "A"): to restore
operation just 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 start, it is necessary to firstly
eliminate the fault.
Other faults (marked with the letter "F") cause temporary shutdowns that are automati-
cally reset as soon as the value returns within the boiler's normal working range, except
for fault F37 which is reset by turning the unit off and then on again with button 14 of
fig. 1.
Table of faults
Table. 5 - List of faults
Fault code
Fault
Possible cause
No gas
Ignition/detection elec-
trode fault
A01
No burner ignition
Faulty gas valve
Insufficient gas supply
pressure
Trap blocked
Electrode fault
Flame present signal with
A02
burner off
Card fault
Heating sensor damaged
Overtemperature protec-
A03
No water circulation in the
tion intervention
system
Air in the system
Fume extraction duct
Fault F07 generated 3
A04
safety device intervention
times in the last 24 hours
Fault F15 generated for 1
A05
Fan protection activated
hour (consecutive)
Ionisation electrode fault
Flame unstable
No flame after ignition
Gas valve Offset fault
A06
stage (6 times in 4 min-
utes)
air/fume ducts obstructed
Trap blocked
Flue partially obstructed
or insufficient
F07
High fume temperature
Fume sensor position
Sensor damaged
F10
Delivery sensor 1 fault
Wiring shorted
Wiring disconnected
Sensor damaged
F11
Return sensor fault
Wiring shorted
Wiring disconnected
Sensor damaged
F12
DHW sensor fault
Wiring shorted
Wiring disconnected
Sensor damaged
Wiring shorted
Wiring disconnected
F13
Fume sensor fault
EXCHANGER SAFETY
THERMOSTAT ACTI-
VATED
Sensor damaged
F14
Delivery sensor 2 fault
Wiring shorted
Wiring disconnected
No 230V power supply
Tachometric signal inter-
F15
Fan fault
rupted
Fan damaged
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 nec-
essary
Check the gas supply pressure
Check the trap and clean it if necessary
Check the ionisation electrode wiring
Check the card
Check the correct positioning and opera-
tion of the heating sensor
Check the circulating pump
Vent the system
See fault F07
See fault F15
Check the position of the ionisation elec-
trode and replace it if necessary
Check the burner
Check the Offset adjustment at minimum
power
Remove the obstruction from the flue,
fume extraction ducts and air inlet and
terminals
Check the trap and clean it if necessary
Check the efficiency of the flue, fume
extraction ducts and outlet terminal
Check the correct positioning and opera-
tion of the fume sensor
Check the wiring or replace the sensor
Check the wiring or replace the sensor
Check the wiring or replace the sensor
Check the wiring or replace the sensor
CHECK THE BOILER SHELL AND
CLEAN IT IF NECESSARY
Check the thermostat and replace it if
necessary
Check the thermostat wiring
Check the wiring or replace the sensor
Check the 3-pin connector wiring
Check the 5-pin connector wiring
Check the fan
cod. 3541H150 - Rev. 03 - 04/2018
Fault code
Fault
Possible cause
Blocked or faulty RESET
Faulty RESET button on
button on controller
F26
controller DBM12 located
DBM12 located on gas
on gas valve
valve
Supply voltage under
F34
Electric mains trouble
170V
F35
Faulty mains frequency
Electric mains trouble
Insufficient system pres-
sure or circulation
Flowswitch or pressure
Circulating pump not
F37
switch contact open
working
Wrong card parameter
setting
Flowswitch contact
Flowswitch dirty or
F38
blocked closed
blocked
Probe damaged or wiring
shorted
F39
External probe fault
Probe disconnected after
activating the sliding tem-
perature
Delivery sensor discon-
A41
Sensor positioning
nected from the pipe
A42
Heating sensor fault
Sensor damaged
F42
Heating sensor fault
Sensor damaged
Sensor damaged
Cascade temperature
F50
Wiring shorted
sensor fault
Wiring disconnected
Controller DBM12 inter-
A61
Controller DBM12 fault
nal error
No communication
Controller not connected
A62
between controller and
Valve damaged
gas valve
A63
A64
Controller DBM12 inter-
Controller DBM12 fault
A65
nal error
F66
Fault F13 generated 3
A80
Fume sensor fault
times in the last 24 hours
Cure
Check the RESET button and replace the
controller DBM12 if necessary
Check the electrical system
Check the electrical system
Check the system water pressure or for
air in the system
Check the circulating pump
Check the card parameter and modify it if
necessary
Clean the flowswitch or replace it if nec-
essary
Check the wiring or replace the sensor
Reconnect the external probe or disable
the sliding temperature
Check the correct positioning and opera-
tion of the heating sensor
Replace the sensor
Replace the sensor
Check the wiring or replace the sensor
Check the earth connection and replace
the controller if necessary.
Connect the controller to the gas valve
Replace the valve
Check the earth connection and replace
the controller if necessary.
See fault F13
EN