Service manual

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Ia
Ib
Ic
• When occurring 3 times within 60 min.,
the malfunction code “L8” is output.
• When occurring 3 times within 30 min.,
the malfunction code “L9” is output
Inverter current standby
or
Inverter current > Ib continues for 260 sec.
Inverter current > Ic continues for 5 sec.
INV upper limit frequency: 1-step up from
current compressor frequency
Inverter current<Ia continues
for 3 min. or more.
Under inverter current
protection control
Inverter current >Ia
Inverter current <Ia
INV upper limit frequency = 210 Hz
Not limited
200-V unit
400-V unit
Inverter current>Ia
INV upper limit frequency: 1-step down
from current compressor frequency
13.5 A
26.1 A
25A
31 A 16.5 A
&
• When occurring 3 times within 60 min.,
the malfunction code “L4” is output.
Fin temp. standby
INV upper limit frequency: 1-step / 1 min
up from current compressor frequency
Interval
Not limited
Tfin<81°C
INV upper limit frequency = 210 Hz
Inverter current<81°C continues
for 3 min. or more.
Under fin temperature
protection control
INV upper limit frequency: 1-step /
1 min down from current
compressor frequency
Tfin>84°C
Tfin>89°C
Tfin>84°C