Hermann Format Slim HE 25 T, Installation And Maintenance Manual

Page: 23 / 36

23
Type No. Description Range
Unit of
meas-
urement
Step Default
DOMESTiC HOT waTER - HEaTiNg
PaR 10 Boiler antifreeze threshold 0 .. +10 °C 1 3
PaR 11 external sensor antifreeze threshold
-9 .. +5
-- = disabled
°C 1 -2
PaR 12 Heating Curve Incline 0 .. 80 - 1 20
PaR 13 minimum Heating temperature adjustment 20 .. Par ts 1.4 °C 1 20
PaR 14 maximum Heating temperature adjustment Par ts 1.3 .. 80 °C 1 80
PaR 16 Heating Post-Circulation time 0 .. 99
seconds
x 10
1 3
PaR 17 Heating Pump activation delay 0 .. 60
seconds
x 10
1 1
PaR 18 Re-ignition delay 0 .. 60 min 1 3
PaR 19 domestic Hot Water modulation with Flow meter
-- = disabled
1 = enabled
- - 1
PaR 26 Zone Valve / Pump Relaunch delay 0 .. 99 min 1 0
PaR 29 anti-legionella Function (only hot water tank)
-- = disabled
50 .. 80
- 1 --
PaR 35
digital / analogue Pressure switch
0 = water pressure switch
1 = water pressure transducer
2 = water pressure transducer (only pressure displayed)
0 .. 2 - 1 1
PaR 40 modulating Pump speed
-- = no modulation
au = automatic 30
.. 100
% 10 au
PaR 41 ∆t modulating pump delivery/Return 10 .. 40 % 1 20
PaR 47 system pump forcing (only in winter mode)
0 = disabled
1 = enabled
- - 0
RESET
PaR 48 Inst Parameter set to default -- ; 1 - - -
In the event of a fault/malfunction the message “aLL” will ap-
pear on the display with the alarm number eg. “aLL 04” (do-
mestic Hot Water sensor Fault).
Before repairing the fault:
– disconnect the appliance from the mains power by setting
the main switch to "oFF"
OFF
Fig. 32
– as a precautionary measure, close the gas isolation valve.
Repair the fault and start-up the boiler again.
Nb:
after having repaired the fault, when the alarm number
appears on the display together with the message d
(see figure) press the button y to start the appliance up
again.
3.5 Fault / malfunction codes
Type No. Description
all 02 low water pressure in system
all 04 domestic hot water sensor fault
all 05 delivery sensor fault
all 06 no flame detection
all 07 sensor or safety thermostat intervenes
all 08 Fault in the flame detection circuit
all 09 no water circulating in the system
all 11 Gas valve modulator disconnected
all 12
Incorrect configuration of the open /sealed cham-
ber
all 15 Fan check cable disconnected
all 17
Fault regarding maximum deviation between the 2
ntC heating sensors
all 28 maximum number of consecutive releases
all 37 Fault due to low network voltage
all 40 Incorrect network frequency detected
all 41 Flame loss more than 6 consecutive times
all 42 Button fault
all 74 Fault in the 2nd element of the delivery sensor
all 81 Block due combustion during start-up
all 83 Irregular combustion (temporary error)
all 96 Block due to clogging in smoke outlet