Operating Fault Diagnostics - Riello 629 T80 Instructions For Installation, Use And Maintenance Manual

4.11 OPERATING FAULT DIAGNOSTIC
The control box has a self-diagnostic system, enabling easy identification of possible causes of malfunc-
tioning: (RED LED signal).
To use this function, you must wait at least ten seconds from the time the control box goes into safety
mode, and then press the reset button for a minimum of 3 seconds.
After releasing the button, the RED LED starts flashing as shown in the diagram below..
RED LED on
wait at least 10 secs
The pulses of the LED constitute a signal at intervals of approximately three seconds.
The number of pulses will provide the information on the possible faults, as per to the table below:
SIGNAL
2 blinks
3 blinks
4 blinks
7 blinks
8 blinks
10 blinks
6203
Press button
for > 3 secs
No stable flame is indicated in the safety period:
– faulty photocell;
– oil valve fault;
– neutral/phase reversal;
– faulty ignition transformer
– poor burner regulation (insufficient fuel oil).
Min. air pressure switch (if installed) does not close:
– air pressure switch faulty;
– air pressure switch not regulated;
– max. air pressure switch triggered (if installed).
Min. air pressure switch (if installed) does not switch or light in the chamber
before ignition:
– air pressure switch faulty;
– air pressure switch not regulated.
Loss of flame during operation:
– poor burner regulation (insufficient fuel oil);
– oil valve fault;
– short circuit between photocell and earth.
– Faulty thermostat for oil permissive signal;
– Heating resistances blown.
– Wiring error or internal fault.
Interval
signal 3 sec
PROBABLE CAUSE
11 GB
signal