Unical KONe R 18 Installation And Servicing Manual

42
26 9 SPEED OUT OF
CONTROL
Alteration of the fan speed; the
speed is above that requested
Check fan operation (18) and
the connections
6 10 HIGH TEMPERATURE
Boiler temperature too high
Check pump operation and if
needed
clean the exchanger (24)
8
NO
WATER
11 WATER DEFICIENCY
Insu󰀩cient water pressure and
consequent intervention of the
minimum water pressure - pres-
sure switch ( 13 ).
Fill the heating circuit as de-
scribed in chap. 3.8 and wait
for the values to return within
default limits.
If needed, check the electri-
cal connections and replace
the minimum water pressure
switch.
44
NO
WATER
12
WATER PRESSURE
detected if the pressure Trans-
ducer is present
Wait for the values to return
to default limits / Replace the
Transducer
16 13 EXCHANGER
FREEZING ( 24 )
Exchanger freezing is detected
If the heating sensor detects a
temperature below 2° C, burn-
er 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.
13 14
DOMESTIC HOT WATER SENSOR
Domestic hot water sensor
fault (1)
Check the efficiency of the
sensor (see table Res/Temp)
(Par.4) or its connections.
12 15 HEATING SENSOR (11)
Heating sensor fault
Check the efficiency of the
sensor (see table Res/Temp)
(Par.4) or its connections.
38 16 FACTORY PARAMETERS
Alteration of the factory param-
eters due to possible electro-
magnetic interferences.
Press the unblock key; if the
anomaly persists, replace the
board.
1
LIMIT
THERM
17
SAFETY THERMOSTAT
Intervention of the safety ther-
mostat (10)
Press the unblock button on
the panel and/or check that the
thermostat or its connections
are not interrupted.
4
BLOCK
18 BLOCK
No gas or failed burner ignition
Check the gas supply or that
the ignition/detection electrode
is working properly (4).
11 19 PARASITE FLAME
Flame detected upon ignition
Check the wiring of the Ign/Det.
electrode and remove any oxidation.
Check for humidity between drain wire
and ceramic, if necessary, replace
the electrode, press the unblock key,
if the anomaly persists, replace the
electrode (4).
20 20 PARASITE FLAME
Flame detected after swtich-o󰀨
Check the wiring and for any
leaks from the gas valve (3), if
needed replace the gas valve.
5
CHIMNEY
21 FLUE GAS COLLECTOR
SAFETY THERMOSTAT
Intervention of the flue gas
collector safety thermostat (23)
Rearm the thermostat manual-
ly and press the
unblock button on the panel.
Check the connections.

Unical KONe R 18 Specifications

General

Brand	Unical
Model	KONe R 18
Category	Boiler
Language	English