Tuttnauer 1730EK, Technical Manual

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59
Correcti
ons
10.1
Replace the s
olenoid. If this does
not help, repair the mechan
ical part
of the valve or replace the
valve.
10.2
Fix the conne
ctions.
10.3
Replace boar
d DIG-T2.
10.4 Replace
ANL
-T2
board.
11.1
Replace f
aulty valve.
11.2
Replace the b
oard.
11.3
Fix the conne
ctions.
11.4

Replace the s
olenoid..

Repair or replace the valve.
11.5 Replace
ANL
-T2
board.
Pos
sib
le ca
use ch
eck
-u
p and tes
ts
The problem may be caus
ed by the mechanical
pa
rt o
f th
e v
alve
, th
e s
oleno
id
, th
e d
rive
r on
ANL-T2 board or the cont
rol circuit on D
IG-T2.
10.1
Check the solenoid coil i
nput voltage wit
h the
solenoid connected to the valve. If the valve is closed despite the voltage
being hi
gher t
han
10V, the pro
blem could be the solenoid
or a
mechanic
al problem at the valve.
10.2
Check the connection bet
w
een connector
JP5/5 and the
valve.
10.3
Check TP9. I
f the voltage i
s constantly 0
VDC
while the valve must be op
en, DIG-T2 board
is faulty.
10.4
If all items ch
ecked above conform to
requirements, ANL-T2 board is faulty.
The problem may be caus
ed by the mechanical
pa
rt o
f th
e v
alve
, th
e s
oleno
id
, th
e d
rive
r loc
ate
d
on the ANL
-T2 board or
th
e con
tro
l circu
it on
the D
IG-T
2 board.
11.1
Water valve is stuck
11.2
Check TP9. I
f the voltage i
s higher than
4V,
the control of
the valve is OK, and board
DIG-T2 is faulty.
If the voltage is 0V
and
va
lv
e is
open, the
pro
bl
em
is
n
ot the co
ntr
ol c
ircu
it bu
t o
the
r
elements of th
e sys
tem.
11.3
Check the connection bet
w
een connector
JP5/5 and the
valve.
11.4
Check the solenoid coil i
nput voltage wit
h the
solenoid connected. Re
move the cover that
protects the terminals of the coil. If the valve is open despite the voltage
being less than
2VDC, there
is a me
chanic
al problem.
11.5
If all items ch
ecked above conform to
requirements, ANL-T2 board is faulty.
Symp
to
m
10.
Water valve is alw
ays
closed.
11.
Water valve is alw
ays open