Riello 3768000, Инструкции по установке, использованию и обслуживанию

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14
2902768
GB
Tab. B
The burner locks out dur-
ing the prepurge phase.
The air pressure switch does not
change over to the operational posi-
tion.
The pressure switch is faulty, change it.
The developed air pressure is to low,
check the burner head setting.
The flame exists. Faulty valves: replace them.
The pressure test point (8, fig. 1, page
1) is badly positioned.
Place it in the right position according to
the instructions of this manual on page 1,
chapter 1.
The burner continues to
repeat the starting cycle
without going on lock-
out.
The pressure in the gas supply is
close to the setting of the pressure
switch.
When the valve opens the pressure in
the supply drops & the gas pressure
switch stops the burner working.
Once the burner valve closes the
pressure in the supply increase &
makes the pressure switch again, and
the cycle continues.
Set the pressure switch according to the
manual.
FAULTS POSSIBLE CAUSES SOLUTION