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Faults which can be recovered manually but not automatically
Display
CL
Inverter over
current:
Wait 1 minute to
reset. If it occurs
CL or OL2 up to 4
successive times
then wait 5
minutes to reset
LV-C
Voltage too low
during operation
OVSP
motor rotation
over speed
OH4
motor over heat
error
5.1.2 Keypad Operation Error Instruction
Display
LOC
1.Parameter
already locked
2.Motor direction
locked
3.Parameter
password (13-07)
enabled
Err1
Keypad operation
error
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Inverter over current warning：
inverter current reach the level
of over current protection
1.Power voltage too low
2.Power voltage varies widely
(fluctuates)
The actual rotation speed is
different to the set speed.
1.If temperature detected
increases above the set limit in
parameter 08-13 and for the
delay time set in parameter
08-12 then the display will show
"OH4" (motor over heat
detection), and the motor will
coast to stop.
2.Motor over heat detection
"OH4" can be reset when the
temperature detection level is
lower than the set level in
parameter【08-14 PTC reset
level】.
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1.Attempt to modify
frequency parameter while
13-06>0.
2.Attempt to reverse
direction when 11- 00=1.
3.Parameter (13 - 07)
enabled, set the correct
password will show LOC.
1.Press ▲ or ▼while
00-05/00-06>0 or running
at preset speed.
2.Attempt to modify the
Parameter.Can not be
modified during operation
(refer to the parameter
list)
Cause
Cause
5-3
Corrective action
Check load condition and
running period time.
1.Improve power quality
2.Consider adding a reactor
at the power input side
1.Check for excessive load
2.Check weather frequency
setting signal is right or not
1.To improve the ventilation
condition
2. Adjust parameter 08-15
Corrective action
1.Adjust 13-06
2.Adjust 11-00
1.The ▲ or▼ is available for
modifying the parameter only
when 00-05/00-06=0
2.Modify the parameter in
STOP mode.
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