Ferroli ECOTRONIC Plus Manual page 94

ECOTRONIC Plus
Stores cool down at night
Collector circuit pump
runs in the night ?
no yes
Collector temperature is
at night higher than the
outdoor temperature.
no yes
Sufficient store insula-
tion?
yes no
Insulation close enough
to the store?
yes no
Are the store connec-
tions insulated?
yes no
Warm water outflow
upwards?
no yes
Does the warm water
circulation run for a very
long time?
no yes
Circulation pump and
blocking valve should be
switched-off for 1 night;
less store losses?
yes no
46
|
Check controller
Check the non-return
valve in the flow and the
return pipe with regard to
the functional efficiency.
Increase insulation.
Replace insulation or in-
crease it.
Insulate the connections.
Change connection and
let the water flow side-
wards or through a siphon
(downwards); less store
losses now ?
no yes
o.k.
Use the circulation pump
with timer and switch-off
thermostat (energy effici-
ent circulation).
Check whether the pumps
of the after-heating cir-
cuit run at night; check
whether the non-return
valve is defective; problem
solved ?
no
Control the non-return
valve in warm water cir-
culation - o.k.
yes no
The gravitation circula-
tion in the circulation
line is too strong; insert
a stronger valve in the
non-return valve or an
electrical 2-port valve
behind the circulation
pump; the 2-port valve is
open when the pump is
activated, otherwise it is
The solar circuit pump does not work, although the coll-
ector is considerably warmer than the store.
Is the control lamp illu-
minated?
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.
Further pumps which are
connected to the solar
store must also be che-
cked.
Clean or replace it.
closed; connect pump and
2-port valve electrically
in parallel; activate the
circulation again.
There is no current; check
fuses / replace them and
check power supply.
The adjusted temperature
difference for starting the
pump is too high; choose
a value which makes more
sense.
Is the pump stuck?
yes
Turn the pump shaft using
a screwdriver; now pas-
sable?
no
P u m p i s d e f e c t i v e -
replace it.
Controller might be de-
fective - replace it.