Ferroli ENERGY TOP W 70 Instrucciones De Uso, Instalación Y Mantenimiento página 51

ENERGY TOP W 70 - W 80 - W 125
4.3 Maintenance
Periodical check
To keep the unit working properly over time, it is necessary to have qualified personnel
make an annual check that includes the following tests:
• The control and safety devices (gas valve, flow meter, thermostats, etc.) must func-
tion correctly.
• The fume extraction circuit must be fully efficient.
• The airtight chamber must be sealed
• The air-fume end piece and ducts must be free of obstructions and leaks
• The condensate evacuation system must be efficient with no leakage or obstruc-
tions.
• The burner and exchanger must be clean and free of scale. When cleaning, do not
use chemical products or wire brushes.
• The electrode must be free of scale and properly positioned.
• The gas and water systems must be airtight.
• The water pressure in the cold water system must be about 1 bar; otherwise, bring
it to that value.
• The circulation pump must not be blocked.
• The expansion tank must be filled.
• The gas flow and pressure must correspond to that given in the respective tables.
The boiler casing, panel and aesthetic parts can be cleaned with a soft damp
A
cloth, possibly soaked in soapy water. Do not use any abrasive detergents and
solvents.
Opening the casing
To open the boiler casing (fig. 35):
1. Undo the screws (A)
2. Open, turning the casing (B)
3. Lift and remove the casing (B)
A A
A A
fig. 35 - Opening the casing
Combustion analysis
Combustion can be analysed through the air sampling point (detail 2) and fume sam-
pling point (detail 1) shown in fig. 36.
To make the measurement, it is necessary to:
1. Open the air and fume sampling points
2. Insert the probes
3. Press the "+" and "-" buttons for 5 seconds to activate the TEST mode
4. Wait 10 minutes for the boiler to stabilise
5. Take the measurement
For natural gas the CO reading must be between 8.7 and 9%.
2
For LPG the CO reading must be between 9.5 and 10%.
2
Analyses made with an unstabilised boiler can cause measurement errors.
A
2
1
fig. 36 - Combustion analysis
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
B B
cod. 3540S806 - Rev. 00 - 09/2013
Fault code Fault Possible cause
EXCHANGER SAFETY
THERMOSTAT ACTI-
VATED
No gas
A01 No burner ignition
Ignition/detection elec-
trode fault
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 activated
system
Air in the system
Fume extraction duct Fault F07 generated 3
A04
safety device activated 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
F13 Fume sensor fault Wiring shorted
Wiring disconnected
Sensor damaged
F14 Delivery sensor 2 fault Wiring shorted
Wiring disconnected
No 230V power supply
Tachometric signal inter-
F15 Fan fault
rupted
Fan damaged
Supply voltage under
F34 Electric mains trouble
170V
Cure
CHECK THE BOILER SHELL AND
CLEAN IT IF NECESSARY
Check the thermostat and replace it if
necessary
Check the thermostat wiring
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 wiring or replace the sensor
Check the 3-pin connector wiring
Check the 5-pin connector wiring
Check the fan
Check the electrical system
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EN