SQFlex Service Instructions
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Electrical problems
Note: Always be aware of the danger of high voltage. Do not directly touch the wires.
Fault Possible cause Remedy
1. Pump does not operate and pro-
peller do not turn or turns slowly 
even in high winds.
• The wind speed is too slow.
• The IO 102 ON/OFF switch is 
set to OFF.
• Pump defective or pump cable 
short circuit.
• IO 102 is defective.
• Wait for the wind speed to 
increase.
• Set the IO 102 ON/OFF switch 
to ON.
• Set IO 102 ON/OFF switch to 
OFF. Disconnect the pump 
from IO 102. Set ON/OFF 
switch to ON. If the propeller 
starts to turn, either the pump 
or the pump cable is defective.
Set IO 102 ON/OFF switch to 
OFF. Replace the defective 
part and reconnect to IO 102. 
Set ON/OFF switch to ON.
• Set IO 102 ON/OFF switch to 
ON. Disconnect the three wires 
from the wind turbine one at 
the time at the IO 102.
if the proppeler starts to turn 
the IO 102 is defective. 
Replace the IO 102.
2. Pump does not operate and pro-
peller turns fast.
• Wires between IO 102 and 
pump may be disconnected.
• Pump defective.
• Set IO 102 ON/OFF switch to 
OFF. Reconnect the wires.
Set IO 102 ON/OFF switch to 
ON.
• Set IO 102 ON/OFF switch to 
OFF. Replace the pump.
Set IO 102 ON/OFF switch to 
ON.
3. Pump does not operate. Propeller 
turns fast and are not alowing 
down when IO 102 ON/OFF 
switch is set to OFF.
• One or more wires between 
wind turbine and IO 102 may 
be disconnected.
• Wind turbine defective.
• IO 102 defective.
• Set IO 102 ON/OFF switch to 
OFF. Reconnect the wires.
Set IO 102 ON/OFF switch to 
ON.
• Set IO 102 ON/OFF switch to 
OFF. Replace wind turbine.
Set IO 102 ON/OFF switch to 
ON.
• Try to disconnect the three 
wires from the wind turbine in 
the IO 102 and short circute 
them. If the propeller slows 
down or stops, the IO 102 is 
defective.
Replace the IO 102.
sqflex_SI_US_WG.book Page 21 Thursday, October 1, 2009 3:27 PM










