Faults / Solutions; Start-Up Problems - Riello RX70 S/PV H 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 8). When this lamp lights on, the burn-
er will attempt to operate only after pressing the reset button. Af-
ter this, if the burner functions correctly, the lockout can be
attributed to a temporary fault. If however the lock out continues
the cause must be determined and the solution found.
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
WARNING
DANGER
POSSIBLE CAUSES
Lack of electrical supply.
Lack of gas.
The connections in the control box are
wrongly inserted.
The phase-neutral connection is inverted
The earth connection lacks or is inefficient. Make the earth connection efficient.
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 posi-
tioned.
Air output is too high.
Valve brake not open enough, with insuffi-
cient gas allowed through.
The flame exists.
21
GB
In the event of a burner lockout, more than two
consecutive burner reset operations could cause
damage to the installation. On the third lockout,
contact the Aftersales Service.
If further lockouts or burner faults occur, interven-
tions must only be made by qualified, authorised
personnel (as indicated in this manual, and in
compliance with the laws and regulations current-
ly in force).
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 position and that there are no short
circuits.
Check and connect completely all the
plugs.
Invert them.
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 man-
ual.
Inspect the quality of the ceramic insulator.
Check right position and, if necessary,
adjust as indicated herein.
Reset the electrical connection.
Replace the faulty connection.
Check the manual cock opening.
Check that valve has changed over to
open position and that there are no short
circuits.
Adjust it according to the instructions of
this manual.
Set the air output.
Adjust it.
Faulty valve: change it.
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