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Installation Instruction and User Guide
19
18.COMMON FAULTS & SOLUTIONS
Fault appearance
Fault cause
Solutions
No any working for
openers LED
screen is not
bright
1. Power supply failure
2. Plug wire is loosing
1. Check whether the opener socket is
energized.
2. Check whether Fuse tube is broken.
3. Check whether the low-voltage wire
of transformer is connected to the power
board.
4. Check whether there is 26V AC at the
transformer low-voltage side, if there is
26V AC, replace the PCB. If not, replace
the transformer.
Position missing
System error
Re-set the limit traveling
LED is always on
The control panel is broken or
the power supply board is
broken
Replace the control board or power
board.
Door is
automatically
reversed to the
upper limit before
the door closed
completely
In operation with automatic
reverse function, the door is
not installed correctly, there is
some blocks on its moving
1. Check the block position of the door
and re-set the limit traveling
2. Increased force number for automatic
reverse.
Door automatically
stops while
opening
In operation with automatic
protect function when
obstruction is detected. The
door is not installed correctly.
There is some block on its
moving.
Check the block position of the door and
re-set the limit traveling
The remote
control cannot be
used or the
operation distance
is short.
1. Flat battery.
2. Antenna is loosed or not
well extended
3. Interference around
nearby.
1. Replace new battery
2. Extended the antenna on the opener.
3. Get rid of interference.
Cannot code in
the new remotes
New remote control is not
compatible with opener
4. Choose our remote control only
The battery do not
supply power
1. Flat battery
2. The battery wire is plugged
inversely
3. The battery wire is broken
1. Charge the battery
2. Open the cover, check “+” “-” of the
battery
3. Replace the battery wire
Other abnormal
issues
External devices is not
compatible with the opener
Remove all the external devices. If the
abnormal issues still exist, replace the
circuit board
Summary of Contents for 4DR2
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