16
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If the boiler remains inactive and connected to the power mains, the circulation pump and the deviating valve will be shortly enabled every
24 hours so as to avoid any shut-down. The same applies to the relay which can be freely programmed whenever this latter is used to power a
recirculation pump or a deviating valve.
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Boiler can be connected to a probe measuring the external temperature (optional - not compulsory, supplied by the manufacturer). Once the
external temperature value is known, the boiler will automatically adjust the heating water temperature: increasing it as the external temperature
decreases and decreasing it as the external temperature increases. This will both improve room comfort and reduce fuel consumption.
This boiler operating mode is called “
sliding temperaturae operation
”.
Heating water temperature varies based on a programme written inside boiler electronic microprocessor.
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but to edit
calculated ambient temperature, namely the desired theoretical temperature.
During temperature setting, the calculated ambient temperature symbol flashes on the display (
10
, fig. 1) and the value being set is shown.
For curve optimal setting, a position close to 20° C is recommended. For further details on sliding temperature, refer to paragraph 3.2.14.
Only original external temperature probes supplied by the manufacturer must be used
.
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Boiler interface includes all the possible functions of a Fondital Remote Control, and can control up to two heating zones.
User can also connect the boiler to a Remote Control (optional - not compulsory, supplied by the manufacturer) so as to manage several boiler
parameters, such as:
- boiler status;
- ambient temperature selection;
- CH system water temperature;
- DHW system water temperature;
- CH system or external heater (optional) activation times programming;
- boiler diagnostics display;
- boiler reset and other parameters.
For instructions on how to connect the Remote Control, refer to
par. 3.2.13 and to its own instruction booklet.
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The boiler shuts down automatically if a malfunction occurs. Refer to Tables 3 and 4 to identify the boiler operating mode.
To determine the possible causes of malfunction, see also paragraph 6.
Troubleshooting
section is at the end of this manual.
Below is a list of kinds of shut-down and the procedure to follow in each.
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Fault code
E01
is displayed flashing on the display in the event of burner shut-down due to missing flame. If this happens, proceed as follows:
- check that the gas cock is open and light a kitchen gas ring for example to check the gas supply;
- once having checked if the fuel is available, press the “reset” button to restore burner operation (
C
, fig. 1): if, after two starting attempts, the boiler
still fails to start and enters the shut-down mode again, contact a Service Centre or qualified personnel for maintenance.
If the burner shuts down frequently, there is a recurring malfunction, so contact a Service Centre or a qualified service engineer.
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In case of flow water overheating, the boiler shuts down and the
E02
code will start flashing.
Contact a Service Centre or a qualified service engineer to carry out the maintenance.
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In case of burner shut-down due to flue operation fault (CTN / RTN models) or intake/flue gas pipes (CTFS / RTFS models), flashing code
E03
is
displayed (flue gas thermostat or air pressure switch tripped).
Contact a Service Centre or a qualified service engineer to carry out the maintenance.
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