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Meanwhile the maximum running frequency will
be adjusted according to the outdoor ambient
temp.
T4LimFre5_ADD
49
46
43
41
38
Heating mode
T1 Ts
4
f
3
e
2
d
1
c
0
b
a
Capacity area
a
Norm code (N)
3
Model
9K
HP
1.0
Plus all the indoor capacity request together,
then modify it by T4
When there's only one indoor unit
Outdoor temperature (T4)
Heating
＜0℃
＜12℃
Modify rate
120%
80%
48
T4LimFre4_ADD
45
T4LimFre3_ADD
42
T4LimFre2_ADD
39
T4LimFre1_ADD
37
No limit
3
2
1
0
-1
b
c
d
e
f
2
1.5
1
0.5
0
12K
18K
1.2
1.5
≥17℃
12℃ ~ 17℃
40%
20%
When there're more than one indoor unit
Outdoor temperature (T4)
Heating
＜0℃
Modify rate
120%
Note: The final result is integer.
Then modify it according to T2
average(correction):
Note:Average value of T2：Sum T2 value of all
indoor units)/(indoor units number
According to the final capacity request to
confirm the operating frequency, as following
table.
Frequency (Hz)
HEAT
0
_F1
Amendatory
capacity
0
1
demand.
Heating capacity improved in low ambient
heating
In heating mode, when
T2<T2_ExitT4LowFre_ADD , and T4<-4 ℃,
there's frequency elevation:
elevated frequency= Recent frequency * 110%
When T2> T2_ExitT4LowFre_ADD-2 and T4>-6,
the highest frequency can't exceed F17
When T2> T2_ExitT4LowFre_ADD-4 and T4>-8,
the highest frequency can't exceed F18
When T2> T2_ExitT4LowFre_ADD-6 and T4>-10,
the highest frequency can't exceed F19
≥17℃
＜12℃
12℃ ~ 17℃
100%
80%
60%
HEAT
HEAT
...
_F2
_F15
...
2
15
HEAT
_F16
16
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