Mitsubishi Electric MS-A•WA Service Technical Manual page 25

<Correction>
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.
w 2 Correct the LEV opening by discharge temperature.
(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.
MXZ-2A
Operation frequency
of compressor (Hz)
Minimum ~ 23
24 ~ 38
39 ~ 54
55 ~ 69
70 ~ 85
86 ~ Maximum
MXZ-3A
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
Target discharge temperature (˚F)
COOL
Number of operating unit
2 units
1 unit
136.4
95
104
120.2
154.4
136.4
149
158
Target discharge temperature (˚F)
COOL
Number of operating unit
1 unit 2 units
95 131
104 131
120.2 136.4
136.4 140
149 149
154.4 154.4
158 158
167 163.4
167 167
167 176
Number of operating unit
1 unit
122
140 132.8
149 140
140
158 140
158 140
Number of operating unit
3 units
1 unit
134.6 125.6
134.6 136.4
145.4 149
149 154.4
158 154.4
163.4 154.4
167 154.4
176 154.4
179.6 154.4
179.6 172.4
25
COOL DRY HEAT
• • •
w 2 w 2
• •
-
HEAT
2 units
122
122
132.8
140
140
140
HEAT
2 unit 3 units
143.6 122
150.8 131
165.2 140
172.4 152.6
172.4 161.6
172.4 168.8
172.4 168.8
172.4 168.8
168.8
172.4
172.4 168.8