Faults - Possible Causes - Solutions; List Of Error Codes - Riello RS 44/E MZ Installation, Use And Maintenance Instructions

Faults - Possible causes - Solutions

6
If faults arise in ignition or operations, the burner performs a "safety stop", which is signalled by the red burner lockout LED. The display
visualises alternately the lockout code and the relative diagnostic.
To reset the start-up conditions, refer to "Reset procedure". When the burner starts up again, the red LED goes out.
6.1

List of error codes

Failure
Diagnostic
code
code
2 4
3 #
0
1
4
4 #
0
1
2
7 3
12 #
0
1
20 0
21 0
22 0
50 - 58 #
60 0
65 - 67 #
#
70
21
26
71 #
0
1
2
3
72 #
73 #
21
26
75 #
1
2
4
16
76 #
84 #
Bit 1
Valence 2..3
Bit 2
Valence 4..7
Meaning of the system REC27.100A2
No flame at the end of TSA1
Air pressure error
Air pressure switch off
Air pressure switch on
Air pressure on – Lockout alarm at start
Extraneous light
Extraneous light during start-up
Extraneous light during switch-off
Extraneous light during start-up – Lockout alarm at start
Loss of flame
Valve leak detection / CPI
V2 leaks / CPI open
V1 leaks / CPI closed
Pmin
Min. gas/oil pressure absent
Pmax
Max. gas/oil pressure exceeded
Safety circuit open
Internal error
Internal error: no valid load checking device
Internal error
Fuel/air checking error: Calculation position in modulation
Invalid load
Curve points not defined
Special position not defined
Standby position
Post-purging position
Pre-purging position
Ignition position
Fuel/air internal checking error
Fuel/air internal checking error
Position calculation, invalid stage load
Position calculation, stage curve points not defined
Fuel/air ratio internal checking error
Check synchronisation data, different current load
Check synchronisation data, different target load
Check synchronisation data, different target positions
Check synchronisation data, different positions reached
Fuel/air internal checking error
Servomotors curve slope
Fuel servomotor: Curve too steep in terms of train ratio
Air servomotor: Curve too steep in terms of train ratio
Recommended measures
Leak test
Check if the valve on the side of the burner has any leaks.
Check if the pressure switch for the leak test (PGVP) is closed when
gas pressure is not present.
CPI
Check the wiring.
Check if the CPI contact is closed.
Leak test
Check if the valve on the side
of the gas has any leaks.
CPI
Check the wiring.
Check if the CPI contact opens when the valve is powered.
Carry out a reset; if the error arises repeatedly, replace the control
box
Carry out a reset; if the error arises repeatedly, replace the control
box
Carry out a reset; if the error arises repeatedly, replace the control
box
No valid load
Adjust the curve points of all the actuators
Set the standby position of all the servomotors used
Set the post-purging position of all the servomotors used
Set the pre-purging position of all the servomotors used
Set the ignition position of all the servomotors used
Carry out a reset; if the error arises repeatedly, replace the control
box
No valid load
Adjust the curve points of all the servomotors
Carry out a reset; if the error arises repeatedly, replace the control
box
The slope of the curve can correspond to a maximum position
variation of 31° between 2 points of the modulation curve
The slope of the curve can correspond to a maximum position
variation of 31° between 2 points of the modulation curve
38
GB
6383