ESA ESTRO - E7014P rev. 02 - 03/05/17
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10
DISPLAY STATUS DESCRIPTION
FLASHING
Lockout due to the extended absence of serial commands by the remote super-
visor, for a longer period of time than the period programmed in the
“Communication timeout” parameter.
FIXED
Malfunctioning is due to the presence of the air pressure switch signal before
the instrument has activated the combustion blower. The causes can be found
in the incorrect wiring or in a fault in the air pressure switch. During normal ope-
ration, this indication appears for a few seconds during the air pressure signal
test.
FLASHING
Lockout due to the presence of the air pressure switch signal before the instru-
ment has activated the combustion blower over the time limit or due to the mal-
functioning of the internal circuit related to the air pressure switch input. The
causes can be found in the incorrect wiring or in a fault in the air pressure
switch.
FLASHING
Lockout due to the missing air pressure switch signal after having activated the
air valve or during normal burner operation. The causes can be found in the
combustion air flow (blocked filters, blower off) or in a pressure switch failure.
FLASHING
Lockout due to the presence of the maximum position limit switch signal or
minimum purge flow switch (FSL), before the instrument has commanded the
air damper to open. Furthermore, this lockout can occur when the prepurge
FSL check is on, but when the signal is received the input test result is negati-
ve. The causes can be found in the incorrect wiring or regulation of the air shut-
ter limit or flow switch.
FLASHING
Lockout due to the presence of the minimum position limit switch signal or
maximum ignition flow switch (FSH), before the instrument has commanded the
air damper to close. Furthermore, this lockout can occur when only the FSH
ignition check is on, but when the signal is received the input test result is nega-
tive. The causes can be found in the incorrect wiring or regulation of the air
shutter limit or flow switch.
FLASHING
Lockout due to the failure of the air damper to close at the end of purging. The
instrument waits for the minimum position limit switch signal for a maximum of
150 seconds from the closing command. The causes can be found in the incor-
rect wiring or regulation of the air damper limit or flow switch.
FLASHING
Lockout due to failed power consumption by the electric devices connected to
the instrument (ignition transformer or solenoid valves). The causes can be
found in the breaking of one of the ignition devices, output protection fuse, in
an interrupted electric connection or if the non resettable protection fuse of the
internal relays is broken. In the last case the instrument must be sent to the
manufacturer.
FLASHING
Lockout due to a failure in the flame detection probe. The causes can be found
in the breaking of the probe, a short circuit of the probe or in its ground connec-
tion (burner body), in the inverted connection of the ESA UV-2 sensibility probe,
in the incorrect ground connection of the instrument or in the strong currents on
the furnace mass (welding machines operating, etc).
FLASHING
Lockout due to malfunctioning of the internal flame amplifier detected after igni-
tion or during the periodic check or the flame amplifier sensor. Furthermore this
lockout is due to the malfunctioning of the dimming shutter probe when the per-
manent operation with UV detection is running. The causes can be found in the
incorrect wiring or in the functioning of the UV-2 shutter. Otherwise, if after an
attempt to reset the problem reoccurs, the instrument must be sent back to the
manufacturer.
FLASHING
Lockout due to the malfunctioning of the internal circuit related to the thermo-
stat input. If after an attempt to reset the problem reoccurs, the instrument must
be sent back to the manufacturer.
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