SOKI 7 E plus | SOKI E trend
| 25
ENGL
IS
H
INSTALLATION
SHUTDOwN
9. Shutdown
Draining the system
The gravity brake is integrated inside the ball valve above the
pump and has an opening pressure of 20 hPa.
f
f
Switch OFF the solar control unit and prevent it being
restarted.
WARNING Burns
The heat transfer medium expelled can be very hot.
f
f
Position and secure the heat-resistant contain-
er in such a way that there is no risk for peo-
ple nearby when the solar thermal system is
drained.
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5�
01
�06
90
�
f
f
Open the gravity brake by moving the handle of the ball
valve to the 45° position.
In this position, the ball valve is half closed. The heat transfer
medium flows in both directions.
f
f
Vent the system at the highest point (above the
collectors).
f
f
Connect a heat-resistant hose to the lowest drain valve in
the solar thermal system. Ensure that the solar medium is
collected in a heat-resistant container.
f
f
Open the drain valve at the lowest point of the system.
10. Troubleshooting
Pump
LED
Operating state
Cause
Remedy
Illumi-
nates
green
The pump is running ac-
cording to its setting.
Standard mode
-
Rapidly
flashes
green
The pump runs in the
venting function for
10 minutes. The required
output must then be set.
Standard mode
-
Illumi-
nates
orange
The pump is speed-con-
trolled via a Pwm signal.
Standard mode
-
Flashes
red/
green
The pump is ready for op-
eration but is not running.
The pump automatically
starts up again as soon
as the fault is no longer
present.
Undervoltage
(U < 160 V) or
overvoltage
(U > 253 V)
Check the power
supply. Ensure
that 195 V < U <
253 V.
The motor tem-
perature is too
high.
Check the tem-
perature of the
heat transfer
medium and the
ambient temper-
ature.
Flashes
red
The pump is blocked and
at a standstill.
The pump does
not automatically
start up again.
Replace the
pump.
Flashes
orange
The pump is at a standstill. The pump is not
running.
Replace the
pump.
LED off
No power supply to the
PCB.
The pump is not
connected to the
power supply.
Check the cables.
The LED is faulty.
Check whether
the pump is run-
ning.
The PCB is faulty. Replace the
pump.
If you cannot remedy the fault, call our service department. To
facilitate and speed up your request, provide the number from
the type plate (000000-0000-000000).
000000-0000-000000
Made in Germany
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5�
01
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70
2�
