MANUAL
HK2 – HK4 25-08-2014
Page
28
3.9
Controller parameters
Parameter
No.
What is?
Unit
Span
min max
Default
value
n0
n0
is the maximum fan speed under normal operation.
%
(n2+1)
100
40
n1
n1
is the minimum fan speed under normal operation.
%
0
(n1-1)
30
n2
n2
is the temperature above which the pump is running during
combustion.
°C
0
80
58
n3
n3
is the temperature difference between boiler preset
temperature and restart after a stop of the fan from too high
boiler temperature.
°C
0
10
0
n4
n4
is the time after the flue gas temperature has become lower
than (n6) in which the fan continues to run.
min
0
255
0
n5
n5
is the display brightness level.
%
0
75
50
n6
n6
is the minimum flue gas temperature
°C
20
250
90
n7
n7
is the temperature below which the 230 VAC output for
the zone valve goes high
°C
0
80
40
n8
n8
is the temperature above (n7) at which the 230 VAC
output for the zone valve goes low
°C
1
20
5
n9
n9
is the extended running time for the boiler pump after the
fan has stopped
min
0
99
10
r0
r0
is the flue gas temperature hysteresis
°C
10
20
15
r1
r1
is the firing up time, i.e. the maximum running time in
extended high speed (r2)
min
0
250
15
r2
r2
is the extended high speed
%
n0
100
80
r3
r3
is used to reset to factory settings
-
0
1
0
r4
r4
is the reading temperature of the storage tank sensor
°C
-
-
actual
value
3.10
Alarm codes
Alarm number
Alarm explanation
Comments
A2
Boiler temperature sensor disconnected
or damaged
The boiler cannot run in this state
A4
Flue gas temperature sensor
disconnected or damaged
The boiler cannot run in this state
3.11
Controller indications (function mode)
Controller state
LED
Display
Fire up
Blinking boiler symbol
Normal operation
Constant (still) display
Reduced output
Fan indication reduses
High boiler temp.
Blinking fan symbol
Burn out
Constant (still) display
Normal stop
Constant (still) display
Alarm
AL2 or AL4 blinking
Содержание HK2
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