22
MYNUTE X
4.21 INFO menu
Pressing key 3 on the display screen displays a list of information regarding the operation of
the boiler listed by parameter name and value.
Passing from the display of one parameter
to the next takes place by pressing respectively the keys
and
.
Pressing the key
allows the selected parameter to be displayed; pressing the key returns you to the
main screen:
4.22 Temporary switch-off
In the event of temporary absences (weekends, short breaks, etc.) set the status of the
boiler to OFF .
While the electrical supply and the fuel supply remain active, the boiler is protected by the
systems:
-
heating anti-freeze:
this function is activated if the temperature measured by the flow sensor
drops below 5°C. A heat request is generated in this phase with the ignition of the burner at
minimum output, which is maintained until the outlet water temperature reaches 35° C;
-
domestic hot water anti-freeze:
this function is activated if the temperature measured
by the domestic hot water probe drops below 5°C. A heat request is generated in this
phase with the ignition of the burner at minimum output, which is maintained until the
outlet water temperature reaches 55° C.
b
The operation of the ANTI-FREEZE function is indicated by a scrolling message
on the interface display: <<DHW ANTIFREEZE FUNCTION IN PROGRESS>> or
<<CH ANTIFREEZE FUNCTION IN PROGRESS>>, as the case may be.
-
circulator anti-locking:
the circulator activates every 24 hours of stoppage for 30
seconds.
4.23 Switching off for lengthy periods
The long term non use of the boiler causes the following operations to be carried out:
- set the status of the boiler to
- set the system's main switch to "off"
- close the fuel and water taps of the heating and domestic hot water system.
Warning lights
BOILER STATUS
RED LED
GREEN LED
RED and GREEN
NOTES
Power-on
flashing
0.5 sec. on/0.5 sec. off
The red and green LEDs come on at the same time
Vent cycle
flashing
0.5 sec. on/1 sec. off
flashing
0.5 sec. on/1 sec. off
The red and green LEDs come sequentially one at a time
OFF status
flashing
0.3 sec. on/0.5 sec. off
No heat request (stby)
flashing
0.3 sec. on/0.5 sec. off
Transitional ignition/
overtemperature
flashing
0.3 sec. on/0.5 sec. off
Presence of flame
ON
Chimney sweep
ON
Only if the flame is present
Screed heating
flashing
1 sec. on/1 sec. off
flashing
1 sec. on/1 sec. off
The red and green LEDs come on alternately
PARAMETER NAME
DESCRIPTION
SCREED HEATING HOURS
Number of hours passed with screed heating function
CH PROBE
Boiler fl ow sensor value
RETURN PROBE
Boiler return sensor value
DHW PROBE
Domestic hot water probe value when boiler in instantaneous mode
Storage cylinder probe value high when boiler in heating only mode
EXHAUST PROBE
Flue gas probe value
OUTDOOR TEMP PROBE
Outdoor temperature sensor instantaneous value
FILTERED OUTDOOR TEMP
Outdoor temperature fi ltered value used in the thermoregulation algorithm for calculating the
heating setpoint
FAN SPEED
Number of turns of the fan (rpm)
MAIN ZONE OUTLET
Main zone fl ow sensor value (when MAIN ZONE ACTUATION TYPE = 1)
EXHAUST PROBE HOURS
Number of hours the heat exchanger has been operating in “condensing mode”
MAIN ZONE SET
Main zone delivery setpoint
WATER PRESSURE
System pressure
COMFORT
Domestic hot water comfort (OFF, STANDARD, SMART)
SUN ON
Special functions active for domestic hot water temperature in high inputs
ELECTRONIC BOARD ID
Electronic board card identifi cation
ELECTRONIC BOARD FMW
Electronic board card fmw revision
INTERFACE FMW
Interface fmw
E085
ON
incomplete combustion
These are temporary alarms that if they occur several
times in an hour they become definitive; the last error to occur is
displayed and is followed by a post-purging of 5 minutes at the fan's maximum speed.
It is not possible to release the alarm before the end of the post-purging unless the boiler's power supply is switched off.
E094
ON
incomplete combustion
E095
ON
incomplete combustion
E058
ON
mains voltage fault
These are temporary faults that restrict the ignition cycle.
E065
ON
current modulation alarm
E086
ON
flue gases obstruction alarm
Temporary fault signalled during pre-purging. Post-purging is maintained for 5 min at maximum fan speed.
Summary of Contents for MYNUTE X 25 C
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