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92
AST 14 C 257/00
Boiler shutdown, message
flashing:
Maximum flow threshold
exceeded
Air inside the boiler
Bleed the boiler by
opening the outlets on
the heat exchanger and
pump.
Circulation of extraneous
hot water in the boiler
Check there are no
other boilers in a
cascade connection, or
supplementary sources.
The memory of the super-
technical parameters board
(from P01 to P05) shows:
Power reduction for high
flue gas temperature
Primary exchanger
clogging
Clean or replace the
primary exchanger.
Boiler shutdown, message
flashing:
Flue gas probe reading
error
The probe is not correctly
calibrated or properly
connected to the pipe
Replace the probe.
Boiler shutdown, message
flashing:
Maximum flue gas
threshold exceeded
Primary exchanger
clogging
Clean or replace the
primary exchanger.
Flue gas side clogging of
primary exchanger and
flue gas duct
Check for obstructions
inside the flue gas duct
or clean the primary
exchanger.
Boiler shutdown, message
flashing:
Max. number of resume
attempts from remote
control exceeded
Presence of an error that
cannot be reset
Intervene directly on the
boiler.
IF NONE OF THESE HYPOTHESES APPLIES, REFER TO THE MAIN ELECTRONIC BOARD, WHERE
YOU CAN ONLY CHECK ALL THE CONNECTIONS OR REPLACE THE BOARD, IF NECESSARY.
WARNING
The touch screen interface performs a self-adjusting procedure of its buttons each
time the boiler is powered on. The touch screen keyboard responsiveness actually
depends on pressure measured during this procedure.
In order to avoid problems with the boiler interface, always power off and power on
the boiler with the front panel in position after finishing any servicing operation.
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