100
11-14.Operational frequency range
(3) LEV opening correction by discharge temperature
When LEV correction output is 0 pulse by the suction super heat at COOL or DRY operation, or HEAT operating, correct
LEV is corrected according to the following table.
The target discharge temperature is determined according to frequency zone and number of operation unit of the
compressor.
Correct the LEV opening according to the difference between target discharge temperature and discharge temperature.
Operation frequency
of compressor
Minimum ~ 20
21 ~ 33
34 ~ 46
47 ~ 59
60 ~ 72
73 ~ 85
86 ~ 98
97 ~ 111
111 ~ Maximum
Single
40
40
45
52
62
67
72
75
80
Double
40
40
45
52
62
67
72
75
80
Single
45
50
55
60
65
70
70
75
76
Double
45
50
55
60
65
70
70
75
76
Number of operating unit
Number of operating unit
COOL, DRY
HEAT
LEV opening correction (pulse)
Discharge temperature (
;
)
LEV opening
correction (pulse)
More than Target discharge temp11
Target discharge temp11 to Target discharge temp8
Target discharge temp8 to Target discharge temp5
Target discharge temp5 to Target discharge temp2
Target discharge temp2 to Target discharge temperature-2
Target discharge temperature-2 to Target discharge temperature-5
Target discharge temperature-5 to Target discharge temperature-8
Target discharge temperature-8 to Target discharge temperature-11
Target discharge temperature-11 or less
COOL
10
4
2
1
0
-1
-2
-5
-8
HEAT
8
2
1
1
0
-1
-1
-2
-6
DRY
(Hz)
Min.
Max. Rated
Min.
Max. Defrost Rated
Note: When the fan speed of indoor unit is
totally Low notch, the maximum frequency
is rated frequency.
COOL (Hz)
HEAT (Hz)
Number of
operating
unit
1
2
3
2
3
4
5
6
7
25
40
76
90
100
120
55
61
85
110
27
41
53
72
25
43
100
100
122
122
120
120
120
120
72
76
88
120
1
2
capacity
code
11-15.Heat defrosting control
(1) Conditions to enter defrosting mode
1
. When temperature of defrosting thermistor is -3
;
or less.
2
.When specified non-defrosting time, is counted in the control p.c.board is satisfied.
(Total time of compressor operating)
Going to defrosting mode at both condition of
1
and
2
.
(2) Defrosting operation
1
. Compressor stops for 50 seconds, Indoor fan is off, Defrosting lamp lights.
2
.4-way valve reverses flow, Compressor operates by the frequency in heat defrosting control.
3
. After compressor stops for 35 seconds, 4-way valve reverses flow, then defrosting finishes.
(3) Conditions to finish defrosting mode
1
. When the defrosting thermistor temperature is 13.2
;
or more.
2
. When it has spent 10 minutes for defrosting.
Defrosting finishes at condition of
1
or
2
.
OB307A4.qxp 03.2.19 4:10 PM Page 100
