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E01 Lockout signal after no flame and all ignition trials are expired.
This error condition is stopping the boiler and to get to the normal operation again, manual/remote reset is required.
E02 If flame signal is measured with no heat demand currently present, error 2 is created. This error condition is stopping the boiler and to
get to the normal operation again, manual/remote reset is required.
E03 High limit temperature protection detected on supply or return sensor.
This error condition is stopping the boiler and to get to the normal operation again, manual/remote reset is required.
E05 Fan driving problem – if the controller doesn’t detect the expected tacho signal from the fan for 1 minute longer, error will be set. This
error condition is stopping the boiler and to get to the normal operation again, manual/remote reset is required.
E08 Flame circuit failure – The detected flame level is outside expected bounds, meaning a problem on electronic components.
E09 Feedback error – The valve feedback doesn’t respect controller commands.
E12 The EEPROM check fails. The data in EEPROM are corrupted.
E15 Drift sensors check failed. Manual/remote reset is required.
E16 Stuck_at test on Supply sensor failed. Manual/remote reset is required.
E17 Stuck_at test on Return sensor failed. Manual/remote reset is required.
E18 Crack sensor test failed. Manual/remote reset is required.
E21 Adc failure. The adc test executed at runtime fail, that detect a major fault on electronic components.
E33 Return sensor out of normal operating range (short circuit or open circuit). If NTC sensor goes outdoor the range (00÷125 °C), error
will be generated. In case sensor is back to the normal operating range, lockout can be cleared by manual/remote reset. In error
mode, heat demands will be disabled. In case 2 or more sensors are broken, controller will pick up the first that was outside the
operating range. Resolving situation can be achieved only if the sensor is within operating range again. The lockout error on this
sensor is necessary because is it used for high limit protection.
E35 Supply sensor out of normal operating range (short circuit or open circuit). If NTC sensor goes outdoor the range (00÷125 °C), error
will be generated. In case sensor is back to the normal operating range, lockout can be cleared by manual/remote reset. In error
mode, heat demands will be disabled. In case 2 or more sensors are broken, controller will pick up the first that was outside the
operating range. Resolving situation can be achieved only if the sensor is within operating range again. The lockout error on this
sensor is necessary because is it used for high limit protection.
E82 Flame loss. The loss of flame during actual HD is counted and if it reaches a defined number of losses (#3) error is set. This error
condition is stopping the boiler and to get to the normal operation again, manual/remote reset is required. The counter is cleared if
flame is not lost for a defined time (4 minutes) or the HD is removed.
5.4 Blocking codes
Temporary blocking condition is given with the capital "
" on the status display and error code on the temperature
display:
The boiler controller recognizes also the fault situations that can block the heat demands but do not lead to lockout
condition. When the error condition becomes resolved, error will disappear but will be also written into the history data.
Symbols is being shown only in case of lockout condition which needs to be solved by Service people.
Exhaust gases temperature is too high
Remote reset volatile lockout
Low power supply from mains
Water pressure is too low (blocking code is shown alternatively with WP value if WPS is used)
Outdoor sensor error
The water pressure in the CH installation is too high
Water filling (auto) is running
Water filling (auto) not completed
Low water pressure after auto water filling attempts
Water pressure sensor not connected
DHW solar storage tank BOTTOM sensor error (only when DHW configuration is 2 or 4)
PT1000 temperature sensor error (only when DHW configuration is 2 or 4)
DHW water temperature sensor error
Exhaust gases temperature sensor error
Drift test waiting
F07 If the exhaust gases temperature becomes higher than Maximum exhaust gases temperature controller will stop indicating F07. The
blocking timer of 15 minutes is set. If the exhaust temperature is within normal levels after this time expired, F07 will be resolved by
itself.
F13 All the attempts to reset the error remotely, either from OT unit or by button, are wasted. It is a volatile lockout which disappears after
removing supply.
F34 Low Mains voltage (less than 170 VAC) will trigger this error. In case of boiler running, burner is switched off. When mains brought
back (over 170 VAC), error is resolved.
F37 Low water pressure error can be caused by the low water pressure (water pressure lower than Water pressure low limit or water
pressure switch contact opens). In error mode, the heat demand and the supply pump are switched off. Heat demands are ignored.
Diverting 3WV is moved in CH position (if it is not already there).
Water filling parameter 0 (disable)
Error is self resolved when water pressure value comes back over the Water pressure nominal or water pressure switch contact is
being closed.
Water filling parameter 1 (enable)
By pressing K4 push button, water filling valve is activated for a period of time equal to Water filling timeout.
If during, that period, water pressure value gets higher than the Water pressure nominal or water pressure switch contact is being
closed, error code is cancelled and the water filling valve is switched off.
Otherwise, if at the end of the Water filling timeout, water pressure value is still below the Water pressure low limit value or water
pressure switch contact is still open, error code becomes blinking.
Another manual water filling attempt, is allowed only after a power down (power up) of the main voltage.
F39 Outdoor sensor out of normal operating range (short circuit or open circuit). If NTC sensor goes in short circuit and this condition lasts
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