E7014
8
FIXED
Normal operation stage with air valve activated. In case the parameter
“Air switch” is configured as “Lockout or Waiting" the device waits the
signal of the air pressure before to show this stage, while when
configured as “Disable” the switch to this stage coincides with the air
valve opening. This phase is present only in case the parameter “Air
flow control type” is configured as “Discontinue or Pulse”.
FIXED
The device verifies the flame’s complete extinguishment in maximum
20 sec. after burner shutoff; otherwise a lockout signal for illegal flame
presence is activated.
FIXED POINT
Furnace purging with air (or waiting phase) after burner shutoff.
During this phase the device doesn’t accept any command and shows
the symbol referred to the phase or block that activated the shutoff
procedure.
FIXED
Burner shutoff phase requested by temp. controller. The device hold the
burner in “OFF” mode waiting for a new start signal, keep closed the air
valve and deactivate the output signals.
BLINKING POINT
High Temperature Operation mode active. During this phase the device
shows the fixed code related to the active phase.
Lockouts or failures
DISPLAY INDICATION
DESCRIPTION
BLINKING
Manual burner shutoff, executed through local or remote push button
during the normal operation stage. The device holds the burner in “OFF”
mode waiting for a new start signal.
BLINKING
Lockout due to a signal of illegal flame presence, before the burner
ignition or after burner shutoff. The causes could be related to the
detection device (failure) or to a fuel gas leaks through the interception
solenoid valves.
BLINKING
Lockout due to a failed burner ignition attempt at 1
st
stage gas. The
causes could be related to the ignition devices (electrode and/or
transformer), to wrong air/fuel ratio gases, or to the flame detection
device (probe or wiring failure). On the first mentioned case the burner
is not ignited, vice versa on the second the flame is present but ESA
ESTRO is unable to detect it.
BLINKING
Lockout due to a missing flame presence signal during the normal
operation stage. The causes could be related to a wrong air/fuel ratio
(too fast flows variation or ratios out of the flame stability range), or to
the flame detection device (probe position or cleanliness).
BLINKING
Lockout due to the extended absence of serial signals from the remote
controller, for a period of time longer than the parameter set as
“Communication timeout”.
The causes could be related to wrong connections or to the serial
communication management.
FIXED
Malfunction due to the presence of the air pressure switch signal before
the blower activation. The causes could be related to a wrong pressure
switch wiring or in its failure.
