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ECONCEPT TECH 18 A
4.2 Startup
Before lighting the boiler
•
Check the seal of the gas system.
•
Check correct prefilling of the expansion tank.
•
Fill the water system and make sure all air contained in the boiler and the system
has been vented.
•
Make sure there are no water leaks in the system, DHW circuits, connections or boiler.
•
Check correct connection of the electrical system and efficiency of the earthing system.
•
Make sure the gas pressure for heating is that required.
•
Make sure there are no flammable liquids or materials in the immediate vicinity of
the boiler
Checks during operation
•
Switch the unit on.
•
Check the tightness of the fuel circuit and water systems.
•
Check the efficiency of the flue and air/fume ducts while the boiler is working.
•
Check the correct tightness and efficiency of the condensate removal system and trap.
•
Make sure the water is circulating properly between the boiler and systems.
•
Make sure the gas valve modulates correctly in heating and domestic hot water pro-
duction.
•
Check proper lighting of the boiler by turning it on and off several times with the room
thermostat or remote control.
•
Make sure the fuel consumption indicated on the meter matches that given in the
technical data table on cap. 5.
•
Make sure that with no heating demand the burner correctly lights on opening a hot
water tap. Check that the heating circulating pump stops on opening a hot water tap
during heating operation and there is a regular production of hot water.
•
Check correct programming of the parameters and carry out any required customi-
sation (compensation curve, power, temperatures, etc.).
4.3 Maintenance
Periodical check
To ensure proper operation of the unit over time, have qualified personnel carry out a
yearly inspection, providing for the following checks:
•
The control and safety devices (gas valve, flow meter, thermostats, etc.) must func-
tion correctly
•
The fume exhaust circuit must be perfectly efficient
•
The sealed chamber must be tight
•
The air-fume end piece and ducts must be free of obstructions and leaks
•
The burner and exchanger must be clean and free of deposits For possible cleaning
do not use chemical products or wire brushes
•
The electrode must be properly positioned and free of scale
•
The gas and water systems must be tight.
•
The water pressure in the cold water system must be about 1 bar; otherwise, bring
it to that value
•
The circulating 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 condensate evacuation system must be efficient with no leakage or obstruc-
tions
•
The trap must be full of water.
4.4 Troubleshooting
Diagnostics
In case of operation faults or problems, the display flashes and the fault identification
code appears.
There are faults that cause permanent shutdown (marked with the letter "A"): to restore
operation just press the reset button (detail 6 - fig. 1) for 1 second or RESET on the op-
tional remote timer control if installed; if the boiler fails to start, it is necessary to firstly
eliminate the fault.
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.
All manuals and user guides at all-guides.com
Table of faults
Table. 8 - List of faults
Fault code Fault
cod. 3540R794 - Rev. 02 - 02/2015
Possible cause
No gas
Ignition/detection electrode 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
A03
protection activation
No water circulation in the system Check the circulating pump
Air in the system
Fume extraction duct
Fault F07 generated 3 times in the
A04
safety device activation
last 24 hours
Fault F15 generated for 1 hour
A05
Fan protection activated
(consecutive)
Ionisation electrode fault
Flame unstable
Gas valve Offset fault
No flame after ignition
A06
stage
(6 times in 4 minutes)
air/fume ducts obstructed
Trap blocked
The exchanger probe detects an
F07
High fume temperature
excessive temperature for over 2
minutes
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
Probe damaged
F13
Exchanger probe fault
Wiring shorted
Wiring disconnected
Sensor damaged
F14
Delivery sensor 2 fault
Wiring shorted
Wiring disconnected
No 230V power supply
F15
Fan fault
Tachometric signal interrupted
Fan damaged
F34
Supply voltage under 170V Electric mains trouble
F35
Faulty mains frequency
Electric mains trouble
Pressure too low
Incorrect system water
F37
Water pressure switch damaged or
pressure
not connected
Probe damaged or wiring shorted
F39
External probe fault
Probe disconnected after
activating the sliding temperature
Delivery sensor disconnected from
A41
Sensor positioning
the pipe
F42
Heating sensor fault
Sensor 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 necessary
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
operation of the heating sensor
Vent the system
See fault F07
See fault F15
Check the position of the ionisation
electrode 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 exchanger
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 exchanger probe
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
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
EN
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