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8
Faults - Possible causes - Solutions
If faults arise in ignition or operations, the burner performs a
"safety stop", which is signalled by the red burner lockout LED.
The display of the operator panel visualises alternately the lock-
out code and the relative diagnostic.
To restore start-up conditions, refer to the "Reset procedure" on
page 36.
When the burner starts up again, the red LED goes out.
8.1
List of error codes
Error
Diagnostic code
code
No Comm
2
#
1
2
4
3
#
0
1
4
20
68
84
4
#
0
1
2
6
18
24
66
70
82
86
7
#
0
3
3...255
12
#
0
20081760
Faults - Possible causes - Solutions
Meaning of the REC 37.400A2 system
No communication between REC 37.400A2 and
RDI21...
No flame at the end of TSA1
No flame at the end of safety time 1 (TSA1)
No flame at the end of safety time 2 (TSA2)
No flame at the end of safety time 1 (TSA1)
(software version V02.00)
Air pressure error
Air pressure switch off
Air pressure switch on
Air pressure on – Lockout alarm at start
Air pressure, fuel pressure on - Alarm lock at start
Air pressure, POC on – Alarm lockout at start
Air pressure, fuel pressure, POC on - Alarm lockout at start
Extraneous light
Extraneous light during start-up
Extraneous light during switch-off
Extraneous light during start-up – Lockout alarm at start
Extraneous light during start-up, air pressure - Alarm
lockout at start
Extraneous light during start-up, fuel pressure - Alarm
lockout at start
Extraneous light during start-up, air pressure, fuel pressure
- Alarm lockout at start
Extraneous light during start-up, POC – Alarm lockout at
start
Extraneous light during start-up, air pressure, POC - Alarm
lockout at start
Extraneous light during start-up, fuel pressure, POC -
Alarm lockout at start
Extraneous light during start-up, air pressure, fuel pressure,
poc - Alarm lockout at start
Loss of flame
Loss of flame
Flame loss (software version V02.00)
Flame loss during TÜV test (flame loss test)
Valve leak detection control
V1 leaks
56
In the event the burner stops, in order to prevent
any damage to the installation, do not unblock the
burner more than twice in a row.
WARNING
If the burner locks out for a third time, contact the
customer service.
In the event there are further lockouts or faults
with the burner, the maintenance interventions
must only be carried out by qualified, authorised
personnel, in accordance with the contents of this
DANGER
manual and in compliance with the standards and
regulations of current laws.
Recommended measures
Check the wiring between the control box REC 37.400A2 and
display RDI21...
The diagnostics covers the period of time from the closure of the
fuel valves to the point the flame loss was detected (resolution
0.2 s
value 5 = 1 s).
Leak test
Check if the valve on the side of the gas has any leaks.
Check the wiring and make sure that the circuit is open.
GB
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