Sonnenkraft SKSC2 Manual Del Usuario página 54

Stores are cooled during the night.
Does collector
circuit pump run
during the night?
no yes
C o l l e c t o r t e m p e -
rature is at night
higher than ambient
temperature.
no yes
Warm water outfl ow
upwards?
no yes
Does warm water
circulation run for a
very long time?
no yes
Switch-off the circu-
lation pump and the
blocking valves for
1 night; less store
losses?
yes no
Control the return
f l o w p r e ve n t e r i n
warm water circu-
lation - o.k.
yes no
The gravitation circu lation in the circulation line
is too strong; insert a stronger return fl ow pre-
venter or an electrical 2-way valve behind the
circulation pump; the 2-way valve is open in
pump operation, other wise it is closed, conect
pump and 2-way valve in parallel; activate the
circulation again!
26
Check the controller
functions
Check the return fl ow
preventer in feed
fl ow and return fl ow
with regard to the
functional effi ciency.
Change connection
and let the water
flow sidewards or
t h r o u g h a s i p h o n
(bow downwards);
l e s s s t o r e l o s s e s
now?
no yes
o.k.
Use the circulation
pump with timer
and switch-off ther-
mostat (energy effi -
cient circulation)
Make sure that the
pumps of the after-
heating circuit are not
in nightly use and that the return fl ow inhibi-
tor is faultless; pro-
blem solved?
no
Please also check
further pumps which
are connected to the
solar store.
Clean or replace.
Tips for fault localization
The solar circuit pump does not work although
the collector is obviously warmer than the
store.
Does the pump start
up in manual opera-
tion?
no yes
Is the current of the
pump released by
the controller?
no
yes
Are the fuses of the
controller o.k.?
no yes
Replace the fuses.
The adjusted tempe-
rature difference for
starting the pump is
too high; choose a
value which makes
more sense.
Is the pump stuck?
yes
Start the pump shaft
up by a screwdriver;
is it ready for opera-
tion now?
no
Is the pump defec-
tive - replace it.
Controller seems to
be defective - re-
place it.