22
MYNUTE X R
For fault E041
If the pressure drops below the safety threshold of 0.3 bar the boiler displays the fault code
<<E041 water transducer load the system>> for a transitional time of 30sec.
DAY
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 "3.15 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:
access the technical parameters as explained in the section
"3.19 Access to the
parameters"
select the CONF menu and then EXHAUST PROBE RESET with the keys
and
set the parameter to 1 confirming the selection with
Enter
.
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:
access the INFO menus as indicated in the paragraph "4.21 INFO menu" at EXHAUST
PROBE RESET to display the value of the flue gases probe meter.
Boiler faults list
ERROR
CODE
ERROR MESSAGE
RED LED
GREEN LED
RED and GREEN
DESCRIPTION OF TYPE
OF ALARM
E010
flame lockout/ACF electronic fault
ON
definitive
E011
extraneous flame
flashing 0.2 sec. on/0.2 off
transitional
E020
limit thermostat
flashing 0.5 sec. on/0.5 off
definitive
E030
fan fault
ON
definitive
E040
water transducer – load the system
ON
definitive
E041
water transducer - load the system
flashing 0.5 sec. on/0.5 off
transitional
E042
water pressure transducer fault
ON
definitive
E060
storage tank probe fault
flashing 0.5 sec. on/0.5 off
transitional
E070
fault flow sensor/overtemperature flow sensor/
flow/return sensor differential alarm
ON
transitional/definitive/
definitive
E077
main zone water thermostat
ON
transitional
E080
fault return line probe/return line probe overtemperature/
outlet/return line probe differential alarm
ON
transitional/
definitive
/
definitive
E090
fault flue gases probe/
flue gases overtemperature probe
flashing 0.5 sec. on/0.5 off
transitional
definitive
E091
clean primary heat exchanger
flashing 0.5 sec. on/0.5 off
transitional
E099
reset attempts exhausted, boiler blocked
It is referred to the last fault occurred
definitive, not resettable
--
water pressure low - check the system
flashing 0.5 sec. on/0.5 off
transitional
--
water pressure high - check the system
flashing 0.5 sec. on/0.5 off
transitional
--
boiler board communication lost
ON
transitional
--
BUS 485 communication lost
ON
transitional
List of combustion faults
ERROR CODE
ERROR MESSAGE
LED
RED
LED
GREEN
DESCRIPTION OF TYPE OF ALARM
E021
iono alarm
ON
These are temporary alarms that if they occur 6 times in an hour they become definitive;
the alarm E097 is displayed and is followed by post-purging for 45 seconds 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.
E022
iono alarm
ON
E023
iono alarm
ON
E024
iono alarm
ON
E067
iono alarm
ON
E088
iono alarm
ON
E097
iono alarm
ON
E085
incomplete combustion
ON
These are temporary alarms that if they occur several times in an hour they become de-
finitive; 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
incomplete combustion
ON
E095
incomplete combustion
ON