Over Current Protection; Compressor Frequency Maximum Setting Protection; Compressor Compress Ratio Protection - Fujitsu AUXB04GALH Service Manual

2-7-7 Over current protection

Protective function Detect device
Overcurrecnt Inverter PCB
protection stop Embeded

2-7-8 Compressor Frequency Maximum setting protection

Protective function Detect device
Compressor
Filter PCB
Frequency
Maximum Current
transformer
setting protection

2-7-9 Compressor compress ratio protection

Protective function Detect device
Compressor High pressure sensor and
compression Low pressure sensor
ratio protecion
Cool Heat Display Start condition
E941 Over current protection
circuit detects (Abnormal
(permanent
current) in 5 times during
stop)
compressor operatng.
E931 Over current protection
circuit detects (Abnormal
(permanent
current) at the compressor
stop)
start-up.
Cool Heat Display Start condition
Pattern 1
Current value more than :
16.0A (AJ* 072L)
20.2A (AJ* 090/ 108L)
33.0A (AJ* 126/ 144/ 162L)
Pattern 2
Current value more than:
17.0A (AJ* 072L)
21.2A (AJ* 090/ 108L)
34.0A (AJ* 126/ 144/ 162L)
Cool Heat Display Start condition
*1 Compress ratio:
Release condition
Current value less than
the start condition
Current value less than
the start condition
Compression ratio*
above 9 (8)
02-22
Release condition Operation
Compressor stop and
Error indication
"Trip Detection"
Error reset (push
button SW)
executed after
power turned on
Compressor stop and
Error indication
"Inverter Compressor
Start up Error"
Operation
Compressor speed
rise up prohibited
Compressor speed
lowered
( ) : AJ* 108/ 126/ 144/ 162L
Release condition Operation
3 minutes elapsed,
and below 8 (7.5)
SV1 => ON