38
Type No. Description Range U/M Step Default
tS 2.1
Minimum power heating/domestic hot water
(premixed)
0 .. 100 % 1 0
tS 2.2 Domestic hot water preheating enabling
0 = OFF
1 = ON
- 1 0
tS 2.5 Auxiliary TA function
0 = according to TA
1 = TA Antifreeze
2 = domestic hot water disabled
- 1 0
tS 2.6 Zone Valve / Pump Relaunch Delay 0 .. 99 Min 1 1
tS 2.8 DHW activation delay with solar power 0 .. 30 Min 1 0
tS 2.9 Anti-legionella Function (Only hot water tank)
-- = Disabled
50 .. 80
- 1 --
tS 3.0 Maximum domestic hot water temperature 35 .. 67 °C 1 60
tS 3.5 Digital / analogue Pressure switch
0 = water pressure switch
1 = water pressure transducer (with
ALL 09)
2 = water pressure transducer (with-
out ALL 09)
- 1 0
tS 3.9 Modulating pump minimum speed 20 .. 100 % 1 30
tS 4.0 Modulating Pump Speed
-- = No modulation
AU = Automatic 30 .. 100
% 10 AU
tS 4.1 ∆T Modulating pump delivery/Return 10 .. 40 °C 1 20
tS 4.2
Select heat pump or boiler convenience (only if tS
0.2 = 6)
-20 .. 30 °C - 5
tS 4.3
Heat pump boiler aid activation delay (only if tS 0.2
= 6)
1 .. 180 Min - 20
tS 4.7 System pump forcing (only in winter mode)
0 = Disabled
1 = Enabled
- 1 0
RESET
tS 4.8 INST Parameter set to default 0 .. 1 - - 0
In the event of a fault/malfunction the message
"AL"
will ap-
pear on the display alternating with the alarm number eg.
"AL
04"
(Domestic Hot Water Sensor Fault).
Before repairing the fault:
– disconnect the appliance from the mains power by setting
the main switch to "OFF"
Fig. 40
– as a precautionary measure, close the gas isolation valve.
Resolve the problem and start-up the boiler again.
NOTE:
after having repaired the fault, when the alarm number
appears on the display together with the message RESET (see
figure), press the button
o
(
R
) for approximately 3 sec-
onds to start the appliance up again.
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