Rev. 10-7-16
Part #C-00140
GT20 Control Wiring and Programming Manual
Troubleshooting
10-45
Section 10b: Malfunction without an Error Code
In some cases, it is technically impossible to display a malfunction by an Error number. For this reason the
list shown below contains some probable causes as well as the corrective action to be taken.
Table 10-9
Closing Sequence / Interlock Function
Erroneous Behavior
Analysis
Possible Causes
Remedy
Drive unit fails to react:
X
No automatic opening
X
No activation from sensors,
Power/Mode Switch buttons
or Mode buttons on side cover.
X
The program selection
keys in the side cover
are not lighted
X
LED 5 V (green) on the
control is not lighted
Power supply
voltage is missing
X
Switch on the main installation
switch in the side cover
X
Measure the mains supply
voltage, check its cabling
and eliminate any detected
deficiencies
X
Should the two above
mentioned measures not be
successful, the control unit
needs to be replaced
Drive unit fails to open
X
LED SE (Safety Sensor,
yellow) is lit
X
Determine which safety
sensor is active via the
diagnostic level
One or more Safety
Sensors are active
or incorrectly
cabled
X
Remove the obstacle
X
Check the cabling between
the Safety Sensor and the
control unit, and eliminate any
detected deficiencies
X
Replace the Safety Sensor
Prior to commissioning:
During manual opening, the Door
panel encounters an resistance
and closes at
high speed
The motor
connector plug
is not correctly
connected
X
Plug the motor connector
plug into the correct socket in
accordance with application
(pulling/pushing function).
Drive Unit fails to open
X
LED SE (Safety Sensor,
yellow) is not lighted
X
LED OE (opening
command, blue) reacts
to the Activation Sensor
X
Determine the
Activation Sensor via
the diagnostic level
Depending on the
enabled operating
mode, activation
commands
(inside/outside,
etc) are ignored
X
Switch on the main power
switch on the Side Cover
X
Measure the main supply
voltage, check the cabling
and eliminate any detected
deficiencies
X
Should the two above-
mentioned measures not be
successful, the Control Unit
needs to be replaced
X
LED SE (Safety Sensor,
yellow) is not lighted
X
LED OE (opening
command, blue) is not
lighted despite the
active Activation Sensor
The opening
command is not
evaluated
X
Check the cabling between
the Activation Sensor and the
Control Unit and eliminate any
detected deficiencies
X
Replace the Activation Sensor
Содержание GT20
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