Dunkirk Helix VLT Vertical Laser Tube, Wall Hung Modulating Condensing Boiler - Manual (Page 63)

63
Disconn
ect ha
rne
ss from
Contro
l M
odule
J5.
M
easure
resistan
ce
b
etwee
n brown
wires
at
terminals
J5
-4
a
nd
J5
-
12
.
Is
resistan
ce
le
ss
th
an
50
oh
ms?
_ P _ _ _
Blocking Error E 6 0 Return sens shorted
Disconn
ect ha
rne
ss from
Re
tu
rn Te
mperat
ure Sensor.
M
ea
su
re
re
si
st
an
ce
a
cr
os
s
se
nsor terminals.
Is resistance
le
ss
th
an
5
0
oh
m
s?
NO
YE
S
Replace
w
ire
s
YE
S
NO
Replace
Return Water Se
nsor
Replace
Control
Module
Disconne
ct wire ha
rne
ss from
Vent Temp
erature
Se
nsor.
Measure Sensor
resista
nce
.
D
oe
s r
es
is
ta
nc
e m
at
ch
estima
te
d flu
e te
mperature?
NO
YE
S
_ P _ _ _
Blocking Error E 6 5 Flue
Sens
Shorted
Rep
la
ce Vent
Tem
pe
ra
tu
re
S
en
so
r
50
to
90
10
to
32
9K
to
2
4K
ohms
150
to
20
0
90
to
130
°F
°C
R
es
ist
an
ce
130
to
15
0
2K
to
1K
oh
ms
2K
to
3K
oh
ms
3K
to
9K
oh
ms
54
to
66
32
to
54
66
to
94 Ve
nt
T
emp
er
at
ur
e
Se
ns
or
Re
sistance
Cha
rt
Disconn
ect ha
rne
ss from
Control
Module
J5.
Continuity
in
b
lue wire
s?
YE
S
NO
Replace
Control
Module
Replace
w
ire
s
13 - TROUBLE SHOOTING