Faults / Solutions; Start-Up Problems - Riello RX 70 S/PV K Installation, Use And Maintenance Instructions

8

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.
In most cases, an operation irregularity leads to the lighting up of
the signal inside the reset button of the control box (1, Fig. 2,
page 7).
8.1

Start-up problems

Faults
The burner does not start when the
limit thermostat closes.
Burner runs normally in pre-purging
and ignition cycle and locks out after
3 firing attempts.
Burner starts with an ignition delay.
The burner locks out during the pre-
purge phase.
Faults / Solutions
Possible causes
Lack of electrical supply.
Lack of gas.
The connections in the control box
are wrongly inserted.
The phase-neutral connection is in-
verted
The earth connection lacks or is inef-
ficient.
Valve lets too little gas through
The gas valve is faulty.
The electric ignition arc is irregular.
The ionisation probe is earthed or
not in contact with the flame, or its
wiring to the control box is broken, or
there is a fault on its insulation to the
earth.
Lack of gas.
The ignition electrodes is wrongly
positioned.
Air output is too high.
Valve brake not open enough, with
insufficient gas allowed through.
The flame exists.
21
GB
When this lamp lights on, the burner will attempt to operate only
after pressing the reset button.
After this, if the burner functions correctly, the lockout can be at-
tributed to a temporary fault.
If however the lock out continues the cause must be determined
and the solution found.
Solution
Check presence of voltage in the L1-N clamps of
the 7 pin plug.
Check the conditions of the fuses.
Check that safety thermostat is not lock out.
Check the manual cock opening.
Check that valve has changed over to open posi-
tion and that there are no short circuits.
Check and connect completely all the plugs.
Invert them.
Make the earth connection efficient.
Check mains pressure and/or adjust the valve as
indicated in this manual.
Replace.
Check the right insertion of the connectors.
Check the right position of the electrode according
to the instructions of this manual.
Inspect the quality of the ceramic insulator.
Check right position and, if necessary, adjust as in-
dicated herein.
Reset the electrical connection.
Replace the faulty connection.
Check the manual cock opening.
Check that valve has changed over to open posi-
tion and that there are no short circuits.
Adjust it according to the instructions of this manu-
al.
Set the air output.
Adjust it.
Faulty valve: change it.
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