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Error
Diagnostic code
code
Bit 4
Valence 16
90 - 91
#
93
#
3
95
#
3 Ignition transformer
4 Fuel valve 1
5 Fuel valve 2
6 Fuel valve 3
96
#
3 Ignition transformer
4 Fuel valve 1
5 Fuel valve 2
6 Fuel valve 3
97
#
0
98
#
2 – Safety valve
3 Ignition transformer
4 Fuel valve 1
5 Fuel valve 2
6 Fuel valve 3
99
#
3
100
#
105
#
0 Min. pressure switch
1 Max. pressure switch
2 Valve operation test
pressure switch
3 Air pressure
4 Load controller open
5 Load controller on/off
6 Load controller closed
7 Safety loop / burner flange
8 Safety valve
9 Ignition transformer
10 Fuel valve 1
11 Fuel valve 2
12 Fuel valve 3
13 Reset
106 ÷ 108 #
110
#
Faults - Probable causes - Solutions
Meaning of the REC 27.100A2 system
Deviation of section compared with the last reference
Burner internal checking error
Flame signal acquisition error
Short circuit of the sensor
Relay supervision error
External power supply - Contact active
Relay supervision error
The relay contacts have joined together
Relay supervision error
The safety relay contacts have joined together or the
safety relay has been powered by an external power
supply
Relay supervision error
The relay does not start up
Relay internal checking error
Relay internal checking error
Relay internal checking error
Contact sampling internal error
Blocked upon irregularity
Contact request internal error
Voltage monitoring test internal error
57
Recommended measures
Overloading of the servomotor or servomotor subjected to
mechanical torsion.
1. Check if the servomotor is blocked in any point along its
range of action.
2. Check if the torque is sufficient for the application.
Short circuit in the QRB sensor...
1. Check the wiring.
2. Flame detector probably faulty.
Check the wiring
Check the contacts:
1. Control box connected to the power supply: the fan output
must be without voltage.
2. Disconnect the power supply. Disconnect the fan. The
resistive connection between the fan output and the neutral
wire is not allowed.
If one of the 2 tests fails, replace the control box because the
contacts are definitively joined together and it is no longer
possible to guarantee safety.
Check the contacts:
1. Control box connected to the power supply: the fan output
must be without voltage.
2. Disconnect the power supply. Disconnect the fan. The
resistive connection between the fan output and the neutral
wire is not allowed.
If one of the 2 tests fails, replace the control box because the
contacts are definitively joined together and it is no longer
possible to guarantee safety.
Carry out a reset; if the error arises repeatedly, replace the unit
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
Software version V03.10: If error C:99 D:3 occurs during the
standardisation of the VSD, temporarily deactivate the Alarm
function at the start of the pre-purging phase (parameter 210 =
0) or interrupt the signal controller-ON
Carry out a reset; if the error arises repeatedly, replace the
control box
Can be caused by capacitive loads or presence of DC voltage
on the main power supply of the control box. The diagnostic
code indicates the input in which the problem arose
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
GB
20010575
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