DORCHESTER DR-FC 25, Installation, Commissioning And Maintenance Instructions

Page: 75 / 98

is
Instruction
M
anu
al
DR-
F
C
75
Wa
rn
in
g
Ma
intena
nce may
o
nly be pe
rformed
b
y a
qu
alifie
d se
rvi
ce and main
te
nance
e
ngin
eer
.
Displ
ay is
o
ff
W
a
te
r
heater is turn
ed
of
f.
S
ta
rt-up
the
wa
te
r
he
ater
. See
’7.2
S
tar
ting up’
No electric powe
r
present
1.
C
heck whether the mains switch is ON.
2.
C
heck tha
t there is pow
er
to the mains switch.
3.
C
heck whether the ON
/OFF
swi
tch
of th
e control p
an
el is ON
(p
osition I).
4.
C
heck whether there is pow
er
to the ele
ctrical
co
nnectio
n
block.
5.
T
he vol
tag
e me
asured
must
b
e 230
V
A
C (-15%, +10
%
).
Se
e appe
ndi
x
’A.2
Electrical di
agram DR-F
C
’
.
If the
e
rro
r can
not b
e
recti
fied, co
nt
a
ct
your
inst
all
er
.
Defective fuse(s
)
R
eplace
fuse
(s)
To
rep
lace
the fuses you must con
tact yo
ur inst
alle
r.
W
ater leak
age
Leaka
ge fro
m
on
e of
the
w
ate
r con
nection
s
(threa
ded
).
T
ig
hten th
e th
re
ade
d co
nne
ctio
n.
If
the
leak persist
s, consult your
inst
aller
.
Cond
ensate lea
kage
Ch
eck
tha
t th
e conde
nsate discha
rge is working
p
ro
perly
. Recti
fy
if necessa
ry
.
Leaka
ge from ano
the
r
nearb
y wa
ter water
heater or pipe se
gment.
T
race the le
ak.
Leaka
ge fro
m
the
water h
eater
’s
hea
te
r.
Co
nsult th
e
su
ppli
er and/or manufacturer
.
Ta
ble
10.1
Ge
neral
e
rro
rs (Shee
t 2 of 3)
Symptom
C
ause
So
lu
tio
n
R
emar
k