INSTALLATION INSTRUCTIONS SURFACE-MOUNTED SCREEN SC900 - SC910
03/15
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6. TROUBLESHOOTING AND REPAIRS
6.1. The screen will not roll up or down.
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The internal limit switch of the motor has not been activated in any direction. Press both
setting buttons and proceed with the setting of the end positions.
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Wire making poor contact when motor cable is extended. Check connections.
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Motor has overheated and runs in thermal safety mode. Leave 1/2 hour to cool down.
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Faulty adjustment of limit switches.
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No current supplied to switch. Check with a voltage meter.
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Motor is incorrectly connected. Check the connection diagram.
6.2. The motor hums.
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Check whether everything can turn freely in both directions. Is anything blocking
the motor?
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Capacitor in motor is broken (as a result of faulty connection to the motor).
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Motor is incorrectly connected, check the correct connection of the motor cables to
the switch using the diagram. A phase wire (brown or black) has been interchanged
with the neutral wire (blue). The motor will run in one direction, but in the other
direction it will just hum.
6.3. The motor does not stop in time.
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Faulty adjustment of limit switches.
6.4. Bottom lath is slanted at the top.
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The guide rails run parallel but not perpendicular to the box. First check whether
the box is dead level, then measure along the diagonals and correct the installation.
6.5. Bottom lath drops out of the lateral guides
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Check if the end stops are fitted at the bottom of the guide rails.
6.6. The fabric tension is too slack; the bottom lath sticks or shudders when the
screen is lowered or raised.
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Check if the guide rails are aligned. The bottom lath is snug inside the guide rails.
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The zipper is not in the zipper guide profile.
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The bottom lath is not suspended properly from the fabric but rests for instance on the
window sill instead.
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The fabric is not positioned correctly in the fabric guide profile.
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Fabric is too wide.
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Lower end switch of the motor is too low or too loosely set.
6.7. Folds and waves in the fabric.
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Box and/or guide rail are not level. Position box and guide rails level.
6.8. The direction of the motor's rotation does not match the arrows on the switch.
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Swap the brown and black cable in the switch.
6.9. The fabric does not stop and roll up again.
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Use a relay box (RI2).
