Unical ALKON 115 EXT, Руководство по установке и обслуживанию

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38
( Num ) = see key Par. 2.2
SYMBOL DESCRIPTION OF FAULT
DETECTED ON
BMM
SOLUTION
01
sAFETY THERMOsTAT
Intervention of the safety thermostat
(10)
Press the unblock button on the panel and/or check that the thermostat
or its connections are not interrupted, make sure the switches INTC are
closed (position 1)
04
BLOCK
No gas or failed burner ignition
Check the gas supply or that the ignition/detection electrode is working
properly (4).
05
PERDITA DI FIAMMA
DURANTE IL
FUNZIONAMENTO.
Verificare elettrodo rilevazione
06
HIGH TEMPERATURE
Boiler temperature too high
Check pump operation and if needed
clean the exchanger (24)
08
wATER DEFICIENCY
Insufficient water pressure and conse -
quent intervention of the minimum water
pressure - pressure switch ( 13 ) .
10
INTERNAL FAULT
11
Flame detection before ignition
(flame parasite)
12
HEATING sENsOR (11)
Heating sensor fault
Check the efficiency of the sensor (see table Res/Temp) (Par.4) or its
connections.
14
RETUR HEATING sENsOR
Auxiliary
(sRR)
sensor interrupted
Check the wiring, if needed replace the auxiliary sensor (22)
15
wATER CIRCULATION INsUFFICIENT
Primary circuit water circulation insuffi -
cient (∆t > 40° C)
Check pump operation and speed - remove any heating system ob -
structions.
16
EXCHANGER
FREEZING ( 24 )
Exchanger freezing is detected If the heat-
ing sensor detects a temperature below
2° C, burner ignition is inhibited until the
sensor detects a temperature above 5°C.
Disconnect the from the power supply, close the gas valve, defrost the
exchanger carefully.
24
sPEED OUT OF
CONTROL
Alteration of the fan speed; the speed is
not reached.
Check fan operation (18) and the connections
4.6 - ERROR CODE
When the boiler detects an error, fault symbol appears on the
display, with the corresponding error code and description. Reset is possible by pressing ''A'' button.