Riello Condexa Pro2 EVO Series Installation Instructions Manual page 30

ERROR LIST
Nr. No. on the PC
A10 10
A11 11
A12 12
A16 16
A17 17
A18 18
A19 19
A20 20
A21 21
A22 22
A23 23
A24 24
A25 21
Nr. No. on the PC
E33 33
E34 34
E35 35
E36 36
E37 37
E38 38
E39 39
E40 40
E41 41
E42 42
E43 43
E44 44
E45 45
E46 46
E47 47
E48 48
E49 49
Cause
Internal error
Internal software error
Internal error
The limit thermostat contact is open with
the burner off
Delivery sensor error due to exceeding the
limit temp.
Return sensor error due to exceeding the
limit temp.
Flue gas sensor tripped for overtemper-
ature > 80°C (fan operates at maximum
speed)
The flame goes out too late after the gas
valve closes
Internal error
The slave board has generated a type "E"
error for more than 24 hours
Internal clock error
Fan error
Internal error
Cause
Line and neutral inverted
Reset button error.
It was pressed more than 7 times in 30
min.
Water differential pressure switch error
(contact open)
Internal error
Flame detection error
Flue gas sensor short circuiting
Flue gas sensor with contact open
The frequency is not 50 Hz
Internal error
Flow sensor in short circuit
Delivery sensor with contact open
Return sensor short circuiting
Return sensor with contact open
Delivery sensor error due to exceeding the
limit temp.
Return sensor error due to exceeding the
limit temp.
Flue gas sensor error due to exceeding
the limit temp. (fan turns at max with this
error).
Insufficient or absent earth connection.
Troubleshooting
Replace the Slave card.
Press the rest button.
Replace the Slave card.
Connector disconnected or defective.
Limit thermostat defective.
Check that the flow rate in each unit's water circuit is
sufficient.
Check that the flow rate in each unit's water circuit is
sufficient.
Heat exchange insufficient on the flue gas side in-
side the exchanger.
Clean the flue gas side exchanger.
Check the proper operation of the gas valve.
Replace the gas valve.
Replace the Slave card.
Check the history of "E" type errors
It is an error inside the clock.
Can be caused by a transient power failure.
Perform a manual reset to restore functioning.
The measured fan speed varies too much with the
read speed.
Check the fan.
Check the fan's electrical connection.
Replace the fan.
Replace the Slave card
Troubleshooting
Restore the correct line-neutral electrical connection
Wait for the error to disappear.
If the error did not disappear after max 40 min, re-
place the Slave card.
Check that the flow rate in each unit's water circuit is
sufficient.
Replace the water pressure switch (tar.500 lt/h).
Replace the Slave card.
Clean the electrodes.
Replace the electrode.
Check the flue gas sensor connector.
Replace the flue gas sensor.
Check the flue gas sensor connector.
Replace the flue gas sensor.
Check the frequency of the electrical network
Replace the Slave card.
Check the delivery sensor connector.
Replace the delivery sensor.
Check the delivery sensor connector.
Replace the delivery sensor.
Check the return sensor connector.
Replace the return sensor.
Check the return sensor connector.
Replace the return sensor.
Check that the flow rate in each unit's water circuit is
sufficient.
Check that the flow rate in each unit's water circuit is
sufficient.
Check that the flow rate in each unit's water circuit is
sufficient.
Clean the water side and flue gas side exchanger.
Check the earth connection.
Replace the Slave card.
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