02-22
Protective function
Detect device Operation
Cool Heat
Display
E941
E931
(permanent
stop)
(permanent
stop)
2-9-7 Over current protection
Start condition Release condition
Inverter PCB
Embeded
Over current protection
circuit detects (Abnormal
current) in 5 times during
compressor operatng.
Error reset (push
button SW)
executed after
power turned on
Compressor stop and
Error indication
"Trip Detection"
Overcurrecnt
protection stop
Over current protection
circuit detects (Abnormal
current) at the compressor
start-up.
Compressor stop and
Error indication
"Inverter Compressor
Start up Error"
Protective function Detect device Operation
Cool
Heat
Display
2-9-8 Compressor Frequency Maximum setting protection
Start condition Release condition
Filter PCB
Current
transformer
Pattern 1
Current value more than :
28.7A ( 6ton, 8ton )
35.5A (10ton )
Current value less than
the start condition
Compressor speed
rise up prohibited
Compressor
Frequency
Maximum
setting protection
Pattern 2
Current value more than:
29.7A ( 6ton, 8ton)
36.5A (10ton)
Current value less than
the start condition
Compressor speed
lowered
Protective function Detect device Operation
Cool
Heat
Display
Start condition Release condition
2-9-9 Compressor compress ratio protection
High pressure sensor and
Low pressure sensor
Compression ratio*
above 9 (8)
3 minutes elapsed,
and below 8 (7.5)
SV1 => ON
Compressor
compression
ratio protecion
*1 Compress ratio:
( ) : L-Chassis
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