81
Display message
R e t u r n
t e m p
h i g h
9 9 9 , 5
h r s
Reason
Return temperature has exceeded the blocking temperature, but the return
temperature has not exceeded the lock-out value.
Display message
T 2 - T 1
h i g h
9 9 9 , 5
h r s
Reason
Temperature difference
T2-T1 has exceeded the blocking value.
Display message
W a t e r p r e s s u r e
f a u l
t
9 9 9 , 5
h r s
Reason
Water pressure is too low or too high.
10.17.3 I
MPORTANT MESSAGE
The following graphs describe the messages at the boiler display. Depending on the selected and activated options
for the boiler, it is possible that some messages will show up at the display of the boiler. For example a maintenance
message after a certain programmed date has been reached. The boiler will operate independently of these mes-
sages.
The display shows alternating the base screen and this message, while the backlight is blinking.
The boiler is operating, but will count the exceeding hours.
A parameter must be changed, after service, to remove this message.
Display message
N e e d s
M a
i
n t
e n a n
0
.
0
I g n i
t
i
o n
c y c
l
e s
h r s
Reason
Maintenance option of total amount of ignition cycles has been reached.
Display message
N e e d s
M a
i
n t
e n a n
0
.
0
D a t e
h r s
Reason
Maintenance option of the date has been reached.
Display message
N e e d s
M a
i
n t
e n a n
0
.
0
B u r n
i n g
h o u r s
h r s
Reason
Maintenance option of total amount of burning hours has been reached.
Display message
N e e d s
M a
i
n t
e n a n
0
.
0
A l
l
h r s
Reason
One of the abovementioned maintenance options has been reached.