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If the outdoor ambient temperature is higher than
the set frequency during oil return, the unit stops
the oil return process.
5.3.11 Low Outdoor Ambient Temperature
Protection
When the compressor is off and T4 is lower than -
35℃ for 10 seconds, the unit stops and displays
"LP."
When the compressor is on and T4 remains lower
than -40℃ for 10 seconds, the unit stops and
displays "LP."
When T4 is no lower than -32℃ for 10 seconds,
the unit exits protection.
5.4 Control and Functions
5.4.1 Capacity Request Calculation
For Old Console series, Old Duct/Cassette/Floor
Ceiling, Old Vertu/Luna Series:
Total capacity Request=Σ(Norm code × HP) /10×
modify rate+ correction
For All new models(New Wall mounted(Hi-Wall)
series, New Duct/Cassette/Console/Floor Ceiling):
Total capacity Request=Σ(Norm code × HP) /40×
modify rate+ correction
Cooling Mode:
T1 Ts
a
3
b
c
2
1
d
0
e
1
f
Capacity area
a
Norm code (N)
3
Model
9K
HP
1.0
4
3
2
1
0
b
c
d
e
f
2
1.5
1
0.5
0
12K
18K
24K
1.2
1.5
2.5
Note: The final result is an integer.
Use the following table and final capacity
request to confirm the operating frequency.
Frequency (Hz)
0
Amendatory
capacity
0
demand.
The maximum running frequency is adjusted
according to the outdoor ambient temperature
℃
55
54
51.5
50.5
45.5
44.5
39
38
33
32
30
29
22
20
10
8
0
-2
-10
-12
Heating Mode
T1 Ts
4
3
2
1
0
18
COO
COO
...
COOL
L_F1
L_F2
...
_F24
...
1
2
24
...
Fmax=
T4FREMAXC0
Fmax= T4FREMAXC1
Fmax= T4FREMAXC2
Fmax= T4FREMAXC3
Fmax= T4FREMAXC4
Fmax= T4FREMAXC5
Fmax= T4FREMAXC6
Fmax= T4FREMAXC7
Fmax= T4FREMAXC8
Fmax= T4FREMAXC9
Fmax= T4FREMAXC10
f
3
e
2
d
1
c
0
b
-1
a
COO
L_F2
5
25
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