42
22.6
No communication
Control panel is connected with working
module by means of digital interface RS485.
In case connecting cable to this interface is
damaged, a message
"
Warning! No
communication
”
is displayed.
Regulator does not go off and works
normally with previously preset parameter
values, and in case of alarm occurrence it
takes action related to respective alarm
Check the cable, which connects the control
panel with the module and repair or replace,
if necessary.
22.7
Unsuccessful boiler firing-up
attempt
This
alarm
is
produced
after
third
unsuccessful attempt of automatic furnace
firing-up. Upon occurrence of this alarm, all
pumps stop to avoid excessive boiler cooling.
To reset the alarm - confirm it or switch off
and on the regulator. The reason of this
alarm may be, among others, faulty heater
or lack of fuel in the bin.
22.8
Unsuccessful attempt of container
loading
It is so called "silent alarm prompt". It occurs
after unsuccessful attempt to charge the fuel
from additional bin (bunker). In case the
attempts to fill the boiler bin have been
unsuccessfully made within one full hour of
second feeder operation, this prompt is
displayed. It does not stop automatic boiler
operation, only warning message appears on
the control panel. To reset this alarm -
confirm it or switch off and on power supply
to the regulator.
22.9
Fan damage
In case of fan damage, a prompt
"Damaged
fan”
is displayed. Burner operation stops.
Note: the function of fan rotation detection
has
to
be
enabled
by
the
boiler
manufacturer.
23
OTHERS
23.1
Power failture
In case of power failure, the regulator
returns to the operation mode in which it was
before the failure.
23.2
Anti-freezing protection
In case the boiler temperature has fallen
below 5 C, CH pump is activated to force
boiler water circulation. It delays water
freezing process, but in case of very low
temperature or lack of power it may not be
sufficient to protect the equipment from
freezing.
23.3
Protection of pumps against
clogging
The regulator performs the function of CH,
HUW and mixer pump protection from
clogging caused by scale deposits. For this
purpose, these components are periodically
(every 167 h) switched on for a few seconds.
In this way the pumps are protected from
immobilization caused by scale deposits. For
this reason, power supply should be
connected to the regulator during boiler
standstill. This function is also active when
the regulator was switched off using the
keyboard (set at "OFF” mode).
24
REPLACEMENT OF PARTS AND
COMPONENTS
When ordering spare parts and components,
necessary information taken from the rating
plates should be provided. In case of
regulator – let us know its serial number, or,
if you are unable to provide it, specify
regulator model, version and year of
manufacture.
Serial number of the regulator is
quoted on rating plate of each
working module.
24.1
Replacement of mains fuse
Mains fuses are located in each working
module. They protect the regulator and other
connected equipment.
In case of replacement, use 6.3 A, 5x20mm
ceramic time fuse.
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