Condensing Pressure - Mitsubishi Electric Mr.Slim MSZ09UN Service Manual

4-3. Condensing pressure

How to operate with fixed operational frequency of the compressor.
1. Press the EMERGENCY OPERATION switch on the front of the indoor unit, and select either EMERGENCY COOL mode
or EMERGENCY HEAT mode before starting to operate the air conditioner.
2. The compressor starts up.
The operational frequency of the compressor is MSZ09UN: 64Hz, MSZ12UN: 70Hz in EMERGENCY COOL mode and
58Hz in EMERGENCY HEAT mode.
3. The fan speed of the indoor unit is High.
4. This operation continues for 30minutes.
5. In order to release this operation, press the EMERGENCY OPERATION switch twice or once, or press any button on the
remote controller.
MSZ09UN
(Cooling)
(PSIG)
300
280
260
240
220
200
180
160
140
68 70 75 80
Outdoor ambient temperature
MSZ09UN
(Heating)
(PSIG)
310
300
290
280
270
260
250
240
230
220
210
200
190
180
170
160
150
5 10 15 20 25 30 35 40 45 50 55 60 65 70
Outdoor ambient temperature
Data is based on the condition of indoor humidity 50%.
Air flow should be set to High speed.
85 90 95 100 104(°F)
Data is based on the condition of outdoor humidity 75%.
Air flow should be set to High speed.
Data is for heating operation without any frost.
86
80
(PSIG)
75
100
70
95
90
85
80
75
70
65
60
55
50
45
40
68 70 75
Outdoor ambient temperature
(PSIG)
100
75
95
90
70
85
80
65
75
70
65
60
55
50
45
40
35
30
25
20
15
10
5 10 15 20
(°F)
11
80 85 90 95 100 104(°F)
25 30 35 40 45 50 55
Outdoor ambient temperature
86
80
75
70
75
70
65
60 65 70(°F)