Oilon RP-130 H, Operation And Maintenance Manual

Page: 16 / 58

2.4.2 2.4.2 Fault indications on a modulating burner Fault indications on a modulating burner
SYMBOL FAULT CAUSE Note
◄
Lockout the CLOSE signal
has not been
delivered to terminal
8 from air damper
servomotor or
contact have not
been closed between
terminals 12 and 4 or
4 and 5.
◄
Lockout Extraneous light (e.g.
non-extinguished
flame, leaking fuel
valves, defect flame
supervision circuit,
etc.).
▲
Interruption of start-
up sequence the OPEN signal has
not been delivered to
terminal 8 from the
air damper
servomotor. Terminals 6, 7 and
15 remain under
voltage until the fault
is corrected!
P Lockout Lockout because the
air pressure signal
has not been
received at the start
of the air pressure
control. From this point on till
controlled shut down
every air pressure
failure triggers a
lockout. Too little
difference in air
pressure (<min.)
triggers a lockout
when differential air
pressure switch
connector (C/NC)
engages a control
signal to control unit
terminal 13.
■
Lockout Fault in the flame
detection circuit
▼
Interruption of start-
up sequence The ignition position
signal has not been
delivered to terminal
8 from air damper
servomotor Terminals 6, 7 and
15 remain under
voltage until the fault
is corrected!
16 (58) RPMARINES 30870641GB
2. Burner operation