2WAY SYSTEM
Control Functions
-
Outdoor Unit
1 - 10
1
3-7-4. Primary current protection of HIC board
The fan motor current is included in primary current. PCB is protected from the power consumption increase of
fan motor when the heat exchanger is blocked by frost, etc.
Limit current 1
Max. current 1L
Stop
If this current is detected at regular intervals, alarm appears.
Frequency of inverter compressor goes down.
Frequency of inverter compressor can increase.
Frequency of inverter compressor cannot increase.
Max. current 1H
Reference
Inverter layout
Diode Bridge
Power Source
IPM(FN)
Magnet SW
Noise Filter
L3
L1
L2
Noise Filter IPM(CM)
Fan Motor
Compressor
W
U
V
W
U
V
Primary CT
Secondary CT
*When restarting after stopping by protection control, the compressor capacity will increase slowly.
2WAY SYSTEM
Control Functions-Outdoor Unit
3. Compressor Control
Limit current 1
Primary
current
Max. current 1 H
unit : Amp.
10HP
19.8
16.8
15.8
8HP
15.1
12.1
11.1
12HP
18.0
15.0
14.0
14HP
21.0
18.0
17.0
16HP
21.0
18.0
17.0
18HP
21.0
18.0
17.0
20HP
21.0
18.0
17.0Max. current 1 L
SM830204-05_2WAY SYS.indb 10 2015/01/21 16:59:59
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