left-hand display
A
rr
d
nn
F
S
t
t/s
right-hand display
da
0 1
a
2 4
0 0
0 1
da
1 2
a
2 8
da
0 0
a
1 2
da
0 1
a
0 9
da
8 1
a
8 9
__ --
0 0
0 1
Function
Pump overrun
Selects low temperature
systems or std systems
Correction of heat curve
translation
night-time lowering
of the temperature
curve incline
do not use
test mode
do not use
factory setting
set to
0 3
set to
0 1
set to
2 0
set to
0 0
set to
0 9
see next paragraph
set to
0 0
3.6.
O
PERATING
P
ARAMETERS
The boiler has been designed to allow easy intervention with regard to the operating
parameters.
3.6.1
R
EGULATION
M
ENU
T
ABLE
Summary of the functions accessed when the RESET button is pushed for 5 seconds.
To return to the normal display, press the “H” reset key repeatedly until all the sequence of
“readout” functions have scrolled through the display and until one of the “display of normal
operations” has appeared (the message that appears will depend on the current operating
mode of the boiler).
Important!!
Parameters d, n and F are only enabled when the outdoor sensor is
connected.
20
3.5.
D
ISPLAY
: M
ESSAGES
S
HOWN
D
URING
N
ORMAL
O
PERATION
LEFT
RIGHT
During operation of the boiler, while it is carrying out its normal operations, the left-hand
display shows a series of characters that refer to the operations indicated below:
--
Diagnostics phase (precedes the other operations)
00
No request for heat
CC
Heating, burner off
CC..
Heating, burner on
cc
Pump overrun for heating
dd
Domestic hot water, burner off
dd..
Domestic hot water, burner on
hh
Pump overrun for domestic hot water
bb
Storage cylinder, burner off (SYSTEM version)
bb..
Storage cylinder, burner on (SYSTEM version)
N
OTE
: the flashing dot on the left-hand display always indicates “burner off”; while the still
dot indicates “burner on”.
The right-hand display (two-digit) shows:
- in CENTRAL HEATING mode: temperature of the Central Heating system flow;
- in DOMESTIC HOT WATER mode: temperature of the Domestic Hot Water (MFFI only).
F
IG
. 3.2
