Service manual

69
1 Discharge temperature
2 Each correction
• (Each gas pipe temperature thermistor - Minimum gas pipe temperature thermistor)w 1
• (Main indoor coil thermistor - Sub indoor coil thermistor)
w 1 Perform this, when number of operation units is 2 units or more.
MXZ-2A52VA is excluded.
w 2 Correct the LEV opening by discharge temperature.
COOL DRY HEAT
• •
-
•
w 2
•
w 2
•
<Correction>
(1) LEV opening correction by discharge temperature
The target discharge temperature is determined according to frequency zone and number of operation unit of the
compressor.
Operation frequency
of compressor (Hz)
Minimum ~ 23
24 ~ 38
39 ~ 54
55 ~ 69
70 ~ 85
86 ~ 100
101 ~ Maximum
1 unit
55
60
62
68
70
70
70
2 units
58
60
65
68
70
70
70
3 units
62
65
70
70
72
72
72
4 units
62
65
70
70
72
72
72
1 unit
50
56
60
60
60
60
60
2 units
50
50
56
60
60
60
60
3 units
50
55
60
60
60
60
60
4 units
50
55
60
60
60
60
60
Number of operating unit Number of operating unit
COOL
HEAT
Target discharge temperature (:)
MXZ-3A54VA MXZ-4A71VA
Operation frequency
of compressor (Hz)
Minimum ~ 23
24 ~ 38
39 ~ 54
55 ~ 69
70 ~ 85
86 ~ 100
101 ~ Maximum
1 unit
56
69
59
60
61
62
63
2 units
60
61
64
67
67
69
70
1 unit
57
63
69
75
80
86
90
2 units
51
58
64
71
77
83
90
Number of operating unit Number of operating unit
COOL
HEAT
Target discharge temperature (:)
MXZ-2A52VA
Operation frequency
of compressor (Hz)
Minimum ~ 14
15 ~ 23
24 ~ 32
33 ~ 41
42 ~ 50
51 ~ 59
60 ~ 68
69 ~ 77
78 ~ 86
87 ~ Maximum
1 unit
55
55
55
60
65
68
70
75
75
75
2 units
55
55
58
60
65
68
70
73
75
80
3 units
57
57
63
65
70
73
75
80
82
82
4 units
59
60
65
67
72
74
75
80
84
84
1 unit
52
58
65
68
68
68
68
68
68
78
2 units
62
66
74
78
78
78
78
78
78
78
3 units
50
55
60
67
72
76
76
76
76
76
4 units
50
55
60
67
72
76
76
76
76
76
Number of operating unit Number of operating unit
COOL
HEAT
Target discharge temperature (:)
MXZ-4A80VA
OBT14A--3qxp 06.1.12 1:10 PM Page 69