Beretta MYNUTE X R Installer And User Manual page 20

MYNUTE X R
ƒ set the maximum desired heating value (rpm) with the
Enter
the selection with
ƒ Once the required output has been set (maximum heating), put the value on the
self-adhesive label on the back cover of this manual. For subsequent controls and
adjustments, refer to the set value.
b
The calibration does not entail the ignition of the boiler.
The boiler is delivered with the adjustments shown in the technical data table.
Depending on plant engineering requirements or regional flue gas emission limits it is,
however, possible to modify this value, referring to the graphs at page 97.
4.19 Lights and faults
When there is a fault the icon blinks with a frequency of 0.5sec ON and 0.5sec OFF, the
backlight blinks for 1min with a frequency of 1sec ON and 1sec OFF after which it switches
off; while the bell continues to flash.
On the 4 digits of the display a scrolling message that describes the error code is shown.
When a fault occurs the following icons can appear:
- it comes on when there is a flame alarm (E010)
- RESET comes on when there is an alarm that requires the manual reset by the user
(flame lockout for example)
- comes on together with the icon
addition, when parameter P3.02 is set to 1 and there is a water pressure transducer
In
present, the pressure value is displayed when it is greater than 3 bar (pressure too
high) or less than 0.6 bar (pressure too low). In these cases, the boiler continues to
operate, as these are only warnings.
The pressure value and the unit of measurement are also displayed at the end of the following
error messages:
ƒ E041
ƒ E040.
Reset function
In order to reset the boiler's operation in the event of a fault, it is necessary to press the
RESET button. At this point, if the correct operating conditions have been restored, the
boiler will restart automatically. There are a maximum of 3 consecutive attempts at a release
by the REC10. In case of all the attempts are exhausted the definitive fault E099 occurs on
the display. The boiler will need to be unlock by cutting off and reconnecting the electrical
supply.
DAY
b
If the reset attempts do not activate the boiler, contact the Technical Assistance
Centre.
20
and keys, confirming
DAY
, except for flame and water alarms.
DAY
For fault E041
If the pressure drops below the safety threshold of 0.3 bar the boiler displays the fault code E041
for a transitional time of 30sec.
When the transitional time has finished, if the fault persists the fault code E040 is displayed.
When the boiler has fault E040 manual loading should be carried out using the filling tap (external
to the boiler) until the pressure is between 1 and 1.5 bar. Then press RESET.
Close the filling tap (external to the boiler), making sure to hear the mechanical snap. At the end
of the procedure, proceed with the automatic vent cycle as described in the section "3.16 Filling
the heating system and eliminating air".
b
If the drop in pressure is very frequent, contact the Technical Assistance Centre.
For fault E060
The appearance of the E060 fault, on models with water tank with probe connected,
prevents sanitary operation.
For fault E091
The boiler has an auto-diagnostic system which, based on the total number of hours in
certain operating conditions, can signal the need to clean the primary exchanger (alarm
code E091). Once the cleaning operation (made with special kit supplied as an accessory)
it is necessary to reset to zero the total hour meter following procedure indicated below:
ƒ access the technical parameters as explained in the section "3.21 Access to the
parameters"
ƒ select the P3 menu and then P3.12 with the keys
ƒ set the parameter to 1 confirming the selection with
NOTE: The meter resetting procedure should be carried out after each in-depth cleaning
of the primary exchanger or if this latter is replaced.
The total hours can be verified in the following way:
ƒ access the INFO menus as indicated in the paragraph "4.20 INFO menu" at I0.15 to
display the value of the flue gases probe meter.
DAY
and
Enter
.