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42
b
If the reset attempts do not activate the boiler, contact
your installer or Vokera Ltd.
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.
DAY
When the transitional time has finished, if the fault persists the
fault code E040 is displayed.
When the boiler has fault E040 it will be necessary to re-
pressurise the system as indicated in section “4.2a WHAT IF I
HAVE FREQUENTLY TO TOP-UP THE SYSTEM”.
If the drop in pressure is very frequent, contact your installer
or Vokera Ltd.
FOR FAULT E060
The boiler is working normally, but does not provide any
stability of the domestic hot water temperature that, in any
event, is supplied at a temperature of around 50°C. The
intervention of the Technical Assistance Service is required.
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
“ 5.1 Access to the parameters”
ƒ
select the P3 menu and then P3.12 with the keys and
ƒ
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:
ƒ
access the INFO menus as indicated in the paragraph
“8.15 INFO menu ” at I0.15 to display the value of the flue
gases probe meter.
ERROR
CODE
FAULT
DESCRIPTION OF ALARM
TYPE
E010
flame lockout/
condensate discharge blockage
fumes discharge alarm/air intake obstructed
definitive
E011 extraneous flame transitional
E020 limit thermostat definitive
E030 fan fault definitive
E040 pressure transducer – load system definitive
E041 water transducer – load system transitional
E042 water transducer fault definitive
E060 domestic hot water probe fault transitional
E070
flow sensor fault
flow sensor overtemperature
flow/return sensor differential alarm
transitional
definitive
definitive
E077 water thermostat main zone or zone 1 (when enabled) transitional
E080
return line probe fault
return line probe overtemperature
outlet/return line probe differential alarm
transitional
definitive
definitive
E084 delivery line probe fault - zone 1 transitional
E086 delivery line probe fault - main zone transitional
E090
flue gas probe fault
flue gas probe overtemperature
transitional
definitive
E091 clean primary heat exchanger transitional
E099 reset attempts exhausted, boiler blocked definitive, not resettable
<0,6 bar Low water pressure check the HTG system
>3,0 bar High water pressure check the HTG system
COM lost communication with boiler board transitional
COMP lost communication with main zone transitional
COM1 lost communication with zone 1 transitional
FWER FW version not compatible definitive
OBCD damaged clock signalisation
OTER OTBus configuration fault
For reset faults, except for E40-E041, call engineer.
8.14 BOILER FAULT CODES