Monitoring The Power Supply Voltage; Frequency Supply Error; Internal Voltage Anomaly; Checking The Fan Motor - Riello RG2D Installation, Use And Maintenance Instructions

7.7.13 Monitoring the power supply voltage

The control box automatically measures the mains voltage.
If the voltage is less than 160V or more than 280V, the burner
stops, interrupts the operating cycle and remains in stand-by, sig-
nalling a fault. The fault is indicated by way of the blinking LED
(see paragraph "Fault diagnostics - lockouts" on page 28).
The burner restarts when the voltage is exceeds approx. 170V or
is brought back under 270V.
 If the fault is detected with flame operation, the valve is imme-
diately closed and the motor stops.
 If the anomaly is detected during pre-purging, the motor
stops.
 If when the main power supply switch is closed or after there
has been no power, the mains voltage stays within the inter-
mediate values (160-170V or 270-280V) the burner does not
start.
 If the burner is in lockout, the mains voltage is monitored but
is not signalled in that there is a lockout signal.
During the ignition time the mains voltage monitoring is deactivat-
ed.

7.7.14 Frequency supply error

The control box automatically detects the value of the frequency
of the main supply in the range of 50 - 60 Hz, in both cases work-
ing times are verified. The fault is indicated by way of the blinking
LED (see paragraph "Fault diagnostics - lockouts" on
page 28).
 If the fault is detected before heat demand the burner does
not start.
 If the fault is detected during the pre-purging, the burner
remains in purge condition and the fault is appropriately sig-
nalled.
 The fault is not detected during normal running, the burner
remains in this state.
When the fault disappears, the burner restarts.

7.7.15 Internal voltage anomaly

The control box automatically detects if the internal voltage works
correctly. The fault is indicated by way of the blinking LED (see
paragraph "Fault diagnostics - lockouts" on page 28).
 If the anomaly is detected during the initialisation check time,
the burner does not start.
 If the anomaly is detected after a lockout the burner does not
start.
 If the anomaly is detected after a shut-down test, the burner
does not start.
 The fault is not detected during normal running, the burner
remains in this state.
When the fault disappears, the burner restarts.

7.7.16 Checking the fan motor

The control box automatically detects the presence of the fan mo-
tor and, in the event of a fault, it performs a lockout. The lockout
is indicated by the blinking of the LED (see paragraph "Fault di-
agnostics - lockouts" on page 28).
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Start-up, calibration and operation of the burner

7.7.17 EEprom check

The control box automatically detects if EEprom memory of mi-
cro-controller has failed and will perform a lockout. The lockout is
indicated by the blinking of the LED (see paragraph "Fault diag-
nostics - lockouts" on page 28).
7.7.18 Checking the electronic control circuit of the
1st stage valve
The control box detects the presence of a fault in the 1st stage
valve's electronic control circuit,
the fault is indicated by the flashing led (see paragraph "Fault di-
agnostics - lockouts" on page 28):
 if the anomaly is detected during the initialisation, the burner
goes into lockout.
 if the anomaly is detected during the pre-purging, the burner
goes into lockout.
 During a recycling, if the fault is detected, the burner does
not start and goes into lockout.
 The fault is not detected during normal running with flame,
the burner remains in this state.
 The fault is not detected if the burner is in lockout.
7.7.19 Checking the electronic control circuit of the
2nd stage valve
The control box detects the presence of a fault in the 2nd stage
valve's electronic control circuit,
the fault is indicated by the flashing led (see paragraph "Fault di-
agnostics - lockouts" on page 28):
 if the anomaly is detected during the initialisation, the burner
goes into lockout.
 if the anomaly is detected during the pre-purging, the burner
goes into lockout.
 During a recycling, if the fault is detected, the burner does
not start and goes into lockout.
 If the fault is detected when there is the motor starting and
valve 1 command, the burner goes into lockout.
 The fault is not detected if the burner is in lockout.
7.7.20 Checking the short-circuit of the 1st stage
valve
The control box, in addition to detecting a fault with the electronic
control circuit of the 1st stage valve, can also detect the presence
of a short-circuit of the valve itself.
In this case the control box goes into lockout to protect against
overcurrent.
This lockout can also occur if, even with the valve operating cor-
rectly, because of a fault the electric section inside connected to
the valve itself is damaged.
The fault is indicated by the blinking of the LEDs.

7.7.21 Long pre-purging

If the long pre-purging is enabled an initial pre-purging of 1 min
and 45 seconds beyond the default pre-purging time is carried
out (15 sec).
In recycles due to flame loss when operating, the long pre-purg-
ing is not carried out but only the pre-purging with the default time
(15 sec).
30 GB