Faults / Solutions; Start-Up Problems - Riello RS5F Instrucciones De Instalación, Montaje Y Funcionamiento

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SIGNAL
3 pulses
4 pulses
6 pulses
7 pulses
ATTENTION
To reset the control box after the diagnostics display, press the lockout-reset button.
6.

FAULTS / SOLUTIONS

Here below you can find some causes and the possible solutions for some problems that could cause a
failure to start or a bad working of the burner. A fault usually makes the lock-out lamp light which is situ-
ated inside the reset button of the control box (4, fig. 1, page 2).
When lock out lamp lights the burner will attempt to light only after pushing the reset button. After this if
the burner functions correctly, the lock-out can be attributed to a temporary fault.
If however the lock out continues the cause must be determined and the solution found.

6.1 START-UP PROBLEMS

FAULTS
The
burner
doesn't
start when the limit
thermostat closes.
20094559
Min. air pressure switch does not close or is already closed before the limit
thermostat closed:
– air pressure switch faulty;
– air pressure switch incorrectly regulated.
Light present in the chamber before the burner's switching on or off:
– presence of a strange light before or after the limit thermostat switching over;
– presence of a strange light during pre-ventilation;
– presence of a strange light during post-ventilation.
Loss of ventilation air:
– air loss during pre-ventilation;
– air loss during and after safety time.
Loss of flame during operations:
– poor burner regulation (insufficient gas);
– faulty or soiled gas valves;
– short circuit between ionisation probe and earth.
POSSIBLE CAUSES
Lack of electrical supply.
Lack of gas.
The gas pressure switch does not
close its contact.
The connections in the control box
are wrongly inserted.
The air pressure switch is changed
over to the operational position.
The servomotor is locked.
PROBABLE CAUSE
Check presence of voltage in the L1 - N
clamps of the 7 pin plug.
Check the condition of the fuses.
Check that safety thermostat is not
lock out.
Check the manual cock opening.
Check that the valves charge over to
the opening position and there are not
short circuits.
Adjust them.
Check and connect all the plugs.
Replace the pressure switch.
Check the right electrical connection.
The servomotor doesn't close complete-
ly and therefore it doesn't pull in the
burner ignition micro: check the micro
working.
13
GB
SOLUTION

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