Table of Contents
Advertisement
Display message
Reason
Water pressure is too low or too high.
Display message
Reason
Outdoor temperature has exceeded the blocking temperature which is set in the parameters.
Display message
Reason
Temperature difference between flow and return exceeds the blocking value but not the lock out value.
Display message
Reason
One of the cascaded water heaters causes an error, because of a lock out.
Display message
Reason
The activation of the air pressure switch.
Display message
Reason
Non return valve contact signal activated, > 15 seconds will cause a lock-out.
Display message
Reason
Wrong electrical power supply is connected (Not 50 or 60Hz, 220-240 Volt).
Display message
Reason
The general blocking circuit is activated during operation = contact 7-8
W
a
t
e
r
p
O
u
t
d
o
o
d
T
B
l
o
C
a
s
c
a
d
A
P
S
f
a
N
R
V
o
r
L
i
n
e
f
G
e
n
B
l
r
e
s
s
u
r
9
r
s
e
n
s
9
c
k
9
e
B
l
o
c
9
u
l
t
9
F
a
n
f
9
a
u
l
t
9
o
c
k
9
e
f
a
u
l
9
9
,
5
h
o
r
f
a
i
9
9
,
5
h
9
9
,
5
h
k
9
9
,
5
h
9
9
,
5
h
a
u
l
t
9
9
,
5
h
9
9
,
5
h
9
9
,
5
h
t
r
s
l
r
s
r
s
r
s
r
s
r
s
r
s
r
s
79
Advertisement
Table of Contents
