Cosmo Deltasol BS - Page 46

46
The solar circuit pump does not run although the coll-
ector is significantly warmer than the store.
Does the control LED
flash?
yes no
Does the pump start up
in manual operation?
yes
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.
no
Is the pump current
released by the con-
troller?
yes
Is the pump stuck?
Turn the pump shaft
using a screwdriver;
now passable?
Pump is defective - re-
place it
Are the controller fuses
o.k.?
Controller might be de-
fective - replace it.
no
yes
no
no yes
Replace the fuses.
4. Troubleshooting