Faults / Solutions - Riello 20045452 Installation, Use And Maintenance Instructions

7

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 work-
ing of the burner.
A fault usually makes the lock-out lamp light which is situated
inside the reset button of the control box 3)(Fig. 1, page 7).
FAULTS
The burner will not start
when the limit thermostat
closes.
Burner runs normally in
the prepurge and ignition
cycle and locks out after 5
seconds ca.
Burner starts with an igni-
tion delay.
In the event of a burner lockout, more than two
consecutive burner reset operations could cause
damage to the installation. On the third lockout,
WARNING
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
DANGER
compliance with the laws and regulations current-
ly in force).
20045701
Faults / Solutions
POSSIBLE CAUSES
Lack of electrical supply.
The photoresistance sees false light.
Resistance or heating resistance.
The connections in the control box are wrongly
inserted.
The photoresistance is dirty.
The photoresistance is defective.
Flame moves away or fails.
The ignition electrodes are wrongly positioned.
Air output is too high.
Nozzle dirty or worn.
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.
Check presence of voltage in the L - N clamps of
the control box.
Check the conditions of the fuses.
Check that safety thermostat limit is not lock out.
Eliminate the light.
Replace them.
Check and connect completely all the plugs.
Clean it.
Change it.
Check pressure and output of the fuel.
Check air output.
Change nozzle.
Check the coil of solenoid valve.
Adjust them according to the instructions of this
manual.
Set the air output.
Replace it.
24
SOLUTION