T
T
a
a
b
b
l
l
e
e
1
1
6
6
L
L
C
C
D
D
D
D
i
i
s
s
p
p
l
l
a
a
y
y
‘
‘
N
N
O
O
N
N
F
F
L
L
A
A
S
S
H
H
I
I
N
N
G
G
’
’
S
S
t
t
a
a
t
t
u
u
s
s
D
D
i
i
s
s
p
p
l
l
a
a
y
y
M
M
e
e
s
s
s
s
a
a
g
g
e
e
s
s
‘
‘
N
N
O
O
N
N
F
F
L
L
A
A
S
S
H
H
I
I
N
N
G
G
’
’
IDLE
This display shows that there is no heat demand
CH OPERATION
The boiler is operating in central heating mode
TAP WATER OPERATION
The boiler is operating to produce DHW
10MIN. PARTIAL LOAD
The boiler is operating in chimney sweep mode for 10 minutes
In the following cases, there may be a heat demand, but the burner is not working, for one of
the following reasons:
T
T
a
a
b
b
l
l
e
e
1
1
7
7
L
L
C
C
D
D
‘
‘
N
N
O
O
N
N
F
F
L
L
A
A
S
S
H
H
I
I
N
N
G
G
’
’
b
b
u
u
r
r
n
n
e
e
r
r
o
o
f
f
f
f
S
S
t
t
a
a
t
t
u
u
s
s
D
D
i
i
s
s
p
p
l
l
a
a
y
y
M
M
e
e
s
s
s
s
a
a
g
g
e
e
s
s
‘
‘
N
N
O
O
N
N
F
F
L
L
A
A
S
S
H
H
I
I
N
N
G
G
’
’
w
w
i
i
t
t
h
h
t
t
h
h
e
e
b
b
u
u
r
r
n
n
e
e
r
r
o
o
f
f
f
f
.
.
MAXIMUM WATER TEMP
The boiler water temperature has reached the set point
FAN OFF-ON
The fan has switched off. Unit will try to reset automatically.
FAN TOO LOW
Detected fan speed to low. Unit will try to reset automatically.
Check wiring terminals on top of transformer
FLAME IDENTIFICATION
Flame detected. . Unit will try to reset automatically.
BLEED
Boiler going through automatic venting cycle
33. Fault
Finding.
Fault Indicator (flashing display)
To a certain extent the boiler will attempt to automatically overcome some of the faults that
occur.
For example, it will attempt 4 ignition sequences before going to lock out.
In situations where it has not been successful, the boiler will lock out and can only be re-started
by pressing the manual (Red) reset button.
When in lock out mode, the error is displayed in the LCD display as a flashing message.
The following list indicates the messages shown and the descriptions of the faults. The
numbers shown in the left hand column, suggest the possible cause.
By using the numbered lists attached, the cause of the fault can be quickly identified and a
repair effected.
Page 50
eco hometec (uk) ltd.