Error List; Master Board Errors - Riello Condexa Pro2 EVO Series Installation Instructions Manual

11 ERROR LIST

A and E type errors possibly encountered with Condexa Pro2 EVO are given in the tables below.
In this sense it should be specified that an E-type error (volatile error) is a fault which automatically disappears as soon as the fault
is resolved; whilst A type (non-volatile error) is a fault that will only disappear after resetting manually when the problem has been
resolved.

11.1 Master board errors

Nr. No. on the PC
A16 10
A18 12
A20 14
Nr. No. on the PC
E02 51
E04 53
E18 67
E20 69
E23 28
E24 29
E25 0/30
E26 31
E32 33
E34 42
11.2 Slave board errors
Nr. No. on the PC
A01 1
A02 2
A04 4
A05 5
A06 6
A07 7
A08 8
A09 9
Cause
Internal error
Internal error
Internal error
Cause
NTC1 open (NTC1: delivery sensor)
NTC3 open (NTC3: boiler sensor)
NTC1 short circuiting (NTC1: delivery sensor) Primary circuit delivery sensor short circuit.
NTC3 short circuiting (NTC3: boiler sensor)
Internal error
Internal error
Internal error
Internal error
Slaves not present
Internal 50HZ error
Cause
5 failed ignition attempts
Multiple unsuccessful attempts due to
flame ionisation problems
Water side limit thermostat (> 90°C) trip-
ping, version SCHEDA43
Gas valve coil interrupted.
False gas valve connector contact.
Defective gas valve connector.
Maximum temperature thermostat tripped
(> 90°C) while burner was on.
No or bad ground connection.
BOARD 43 only
Internal error
Internal error
50Hz
Troubleshooting
Replace the Master card
Replace the Master card
Replace the Master card
Troubleshooting
Primary delivery sensor not connected or interrupt-
ed.
DHW sensor not connected or interrupted.
DHW sensor short circuiting.
Replace the Master card
Replace the Master card
Replace the Master card
Replace the Master card
Check that the bipolar switches of the individual
units are "ON".
Check the addresses on the slave.
Check the slave BUS connection.
Replace the Master card.
Replace the Slave card.
The main frequency is not 50Hz
Troubleshooting
Check that the gas tap is open.
Check for the presence of electric discharge between
the two ignition electrodes.
Check the ignition cable.
Do not open the gas valve.
Replace the electronic card (Slave).
Clean the electrodes.
Replace the igniter plug.
Replace the ignition cable.
Poor circulation in the primary circuit.
Limit thermostat defective.
Replace the gas valve.
Check the gas valve connector.
Replace the gas valve connector.
Poor circulation in the primary circuit.
Limit thermostat defective.
Check the earth connection.
Replace the Slave card.
Replace the Slave card.
Replace the Slave card.
The main frequency is not 50Hz
29
ERROR LIST