7.3
Incidents and solutions
Description
Checks
Solutions
The indicator light is off.
The fuse is defect.
Replace the fuse.
¼
See chapter: "Electricity supply",
The current has been cut.
Restore the current.
The solar pump is running but the DHW calorifier
temperature is not increasing.
Air bubbles are present in the
circuit.
Vent the heating installation.
Check the pressure.
Activate and deactivate the pump
several times in a row.
The solar collector filter is clogged. Clean the filter.
The solar pump starts and stops continually.
The solar collector sensor is in the
wrong place.
Place the collector sensor on the solar
flow, the hottest point on the collector
outlet.
The temperature difference set on
the control system is too small.
Modify the
DT
value.
The tubular collector option is
unsuitable.
Modify the
FT
value.
The solar pump starts later than expected.
The
DT
value is too high.
Modify the
DT
value.
The collector sensor is incorrectly
set or placed.
Modify the
DT
value.
Place the collector sensor on the solar
flow, the hottest point on the collector
outlet.
The temperature difference between the DHW
calorifier and the solar collector increases when the
system is activated.
The solar circuit cannot evacuate the heat.
The solar pump is defect.
Change the solar pump.
The circuit is blocked.
Clean the solar circuit.
The circuit is scaled up.
Descale the circuit.
The solar pump is not running but the collector
temperature is higher than the DHW calorifier
temperature.
The current has been cut.
Check the fuse in the control system.
Check the electricity supply.
The pump does not start in manual
mode.
The pump is blocked.
Check that the PWM cable is
connected to the pump.
Change the solar pump.
The pump is not receiving power
from the control system.
Check the fuse in the control system.
Check the electricity supply.
Change the control system.
The
DT
value is too high.
Modify the
DT
value.
The tank temperature drops even though there is
no draw-off.
The pump operates during the
night.
Check the programming of the control
system.
There is recirculation in the solar
circuit or the domestic hot water
circuit.
Place a non-return device in the solar
or domestic hot water circuit.
The collector temperature is higher than the outside
temperature at night.
The non-return valves are not
working.
Check the non-return valves.
Thermosiphon circulation is too
powerful.
Use more suitable non-return valves.
200SE-2S - 300SE-2S
7. Troubleshooting
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