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 Chapter 8 Faults – Causes – Remedies Operate
Digital
Fault
panel
tube
descripti
display
display
on
Probable cause
Remedy
Sort
long time and needs
maintenance;
1.Detect safety circuit,
and look over its state;
Err 41
E41
Safety
circuit off
The signal of safety
2.Detect that exterior
circuit is cut.
power
supply
5
is
natural or not;
Door
Err 42
E42
lock cut
in
running
Up limit
Err 43
E43
The
door
lock
feedback is cut when
lift is running.
Detect that the door lock
contact is natural or not.
The signal of up limit
Detect that the up limit
is cut when lift is up
switch contact is natural
running.
or not.
limit
The signal of down
Detect that the down
signal off
limit is cut when lift is
limit switch contact is
down running.
natural or not.
signal off
in
running
5
4
Down
Err 44
E44
in
4
running
1.Detect 1st up/down
Up/Dow
n
Err 45
E45
slowdow
n switch
off
Up
and
slowdown
down
switch
is
slowdown switch;
2. Ensure 1st up/down
cut at one time when
slowdown
the elevator stops.
characteristic (N.O. or
4
signal
N.C.);
Re-leveli
Err 46
E46
ng
abnormit
y
1.The
speed
re-leveling
is
0.1m/s;
of
over
1.Detect the primary ,
secondary
connection
2.Re-levelling
‐ 163 ‐
relay.
circuit
of
lock
1