Cosmo Multi 2 Montage- Und Bedienungsanleitung Seite 118

118
5. Troubleshooting
The solar circuit pump does not work, although the
collector is considerably warmer than the store.
Is the control lamp
(LED) illuminated?
yes no
Does the pump start up
in manual operation?
no yes
Is the pump current
enabled by the control-
ler?
no
yes
Are the controller fuses
o.k. ?
no yes
Replace fuses..
There is no current;
check fuses / replace
them and check power
supply.
The adjusted tempe-
rature difference for
starting the pump is
to high; choose a va-
lue which makes more
sense.
Is the pump stuck?
yes
Turn the pump shaft
using a screwdriver;
now passable?
no
Pump is defective - re-
place it
Controller might be de-
fective - replace it.