7 Troubleshooting
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282
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Fault
Code
Name Possible Causes Solution Level
Err47
Shorting door
lock circuit
contactor
abnormal.
Subcode 101: The shorting
door lock circuit contactor
outputs for continuous 2s, but
the feedback is invalid and the
door lock is disconnected.
◆
Check the signal feature (NO, NC) of the
feedback contact on the shorting door lock
circuit contactor.
◆
Check whether the shorting door lock circuit
contactor acts properly.
2B
Subcode 102: The shorting
door lock circuit contactor has
no output, but the feedback is
valid for continuous 2s.
Subcode 106: The door lock
feedback is detected as valid
before re-leveling.
Subcode 103: During re-
leveling or pre-open running,
the output time of the shorting
door lock circuit contactor is
larger than 15s.
◆
Check whether the leveling and re-leveling
signals are normal.
◆
Check whether the re-leveling speed is set
too low.
Err48 Door open fault
Subcode 101: The consecutive
times that the door does not
open to the limit reaches the
setting in Fb-09.
◆
Check whether the door machine system
works properly.
◆
Check whether the CTB output is normal.
◆
Check whether the door open limit signal
and door lock signal are normal.
5A
Err49 Door close fault
Subcode 101: The consecutive
times that the door does not
close to the limit reaches the
setting in Fb-09.
◆
Check whether the door machine system
works properly.
◆
Check whether the CTB output is normal.
◆
Check whether the door close limit signal
and door lock signal are normal.
5A
Err50
Consecutive loss
of leveling signal
Subcode 101: Leveling signal
stuck is detected for three
consecutive times.
◆
Check whether the leveling and door zone
switches work properly.
◆
Check the installation verticality and depth
of the leveling plates.
◆
Check the leveling signal input points of the
MCB.
◆
Check whether the steel rope slips.
5A
Subcode 102: Leveling signal
loss is detected for three
consecutive times.
Err51
CAN
communication
fault
Subcode 101: Feedback data
of CANbus communication
with the CTB remains
incorrect.
◆
.
◆
Check the power supply of the CTB.
◆
Check whether the 24 V power supply of the
controller is normal.
◆
Check whether there is strong-power inter-
ference on communication.
1A
Err52
HCB
communication
abnormal
Subcode 101: Feedback data
of Modbus communication
with the HCB remains
incorrect.
◆
Check the communication cable connection.
◆
Check whether the 24 V power supply of the
controller is normal.
◆
Check whether the HCB addresses are re-
peated.
◆
Check whether there is strong-power inter-
ference on communication.
1A
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