ERA F 23 - 32 - 45 - 56
3.4 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 11 - fig. 1) indicating the fault
code.
There are faults that cause permanent shutdowns (marked with the letter "A"): to restore
operation, press the RESET button (detail 6 - fig. 1) for 1 second or use the RESET on
the optional remote timer control if installed; if the boiler fails to start, it is necessary to
eliminate the fault indicated by the operation LEDs.
Other faults marked with the letter "F" cause temporary shutdowns that are automatically
reset as soon as the value returns within the boiler's normal working range.
Fault table
Table. 2 - Fault list
Fault
Fault
Possible cause
code
No gas
Ignition/detection electrode fault
A01 The burner fails to light
Faulty gas valve
Ignition power too low
Electrode fault
Flame present signal with
A02
burner off
Card fault
Heating sensor damaged
Overtemperature protection
A03
No water circulation in the
activation
system
Air in the system
Fume thermostat contact open
Fume thermostat activation
(after activation of the fume
Wiring disconnected
F04
thermostat, boiler operation
Flue not correctly sized or
is inhibited for 20 minutes)
obstructed
Low pressure in the gas system Check the gas pressure
No flame after the ignition
A06
Burner minimum pressure set-
phase
ting
Sensor damaged
F10 Delivery sensor 1 fault
Wiring shorted
Wiring disconnected
Sensor damaged
F11 DHW sensor fault
Wiring shorted
Wiring disconnected
Sensor damaged
F14 Delivery sensor 2 fault
Wiring shorted
Wiring disconnected
F34 Supply voltage under 170V. Power mains trouble
F35 Mains frequency anomaly
Power mains trouble
Pressure too low
Incorrect system water
F37
Water pressure switch not
pressure
connected or damaged
Probe damaged or wiring
shorted
F39 External probe fault
Probe disconnected after
activating the sliding temperature
Delivery sensor disconnected
A41 Sensor positioning
from the pipe
F42 Heating sensor fault
Sensor damaged
F50 Modureg fault
Wiring disconnected
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
necessary
Adjust the ignition power
Check the ionisation electrode wiring
Check the card
Check the correct positioning and operation
of the heating sensor
Check the circulating pump
Vent the system
Check the thermostat
Check the wiring
Replace the flue
Check the pressures
Check the wiring or replace the sensor
Check the wiring or replace the sensor
Check the wiring or replace the sensor
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 correct positioning and operation of
the heating sensor
Replace the sensor
Check the wiring
cod. 3540L893 - Rev. 01 - 03/2018
4. TECHNICAL DATA AND CHARACTERISTICS
4.1 Dimensions and connections
fig. 22 - Dimensions and connections
Type and model
A
B
C
D
ERA F 23
450
137
134
65
ERA F 32
450
94
91
22
ERA F 45
600
126
123
86
ERA F 56
600
83
80
40
A1
A2
E
F
G
Heating
Heating
delivery
return
480
130
70
530
150
80
1" 1/2
1" 1/2
480
150
80
480
180
95
EN
A3
Gas
inlet
1/2"
11