DELUXE
Inverter
Service
M
anual
(6) E4- Sliding door error of floor standing
Explanation of
sliding door error
Cause:
For the model with upper and lower sliding doors, the position of trap
door is sensed via the upper and lower photoelectric switches. When the
sliding door closes, it will move upward until the upper photoelectric switch
senses the sliding door; when the sliding door opens, it will move downward
until the lower photoelectric switch senses the sliding door. When the
photoelectric switch cannot sense the position of the sliding door normally, it
will indicate “sliding door error”.
Inspection path:
Mechanical jam of sliding plate →Synchronous motor →
Can synchronous motor connect to 220V power →
photoelectric switch connection wire → Photoelectric switch → Main
internal control panel
Tools required for
inspection
Multimeter, photoelectric switch in normal condition
Frequent
problematic part
Mechanical jam of sliding plate, photoelectric switch, reversible
synchronous motor, main internal control panel
Inspection
procedure and key
points
1. Power on and observe whether there is mechanical jam in the sliding plate.
Check
that
there are no packaging materials such as
tapes, remove them.
2. If the sliding door slides normally when the machine powers on and off but
it still indicates “sliding door error”, then there’s something wrong with the
photoelectric switch.
3. If the sliding door does not slide when the machine powers on and off,
check the reversible synchronous motor to see whether the motor is connected
to 220V power or the motor’s wire is damaged.
4. If there is something wrong with the photoelectric switch, replace it with
another one in normal condition and repeat the above procedures. If the error
disappears, then it’s photoelectric problem; if not, then it’s main internal
control panel problem.
Special attention
1. Please confirm that it is a new sealed one when replacing the photoelectric
switch.
2. There are two photoelectric switches, so check the upper one when the
error occurs when powering off and check the lower one when the error
occurs when powering on.
3. Terminals connected to upper and lower photoelectric switches should be
connected accordingly because they have different colors. Otherwise, it will
lead to reverse switches for the sliding plate.
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