Mitsubishi Electric Mr.Slim MSZ09UN Service Manual page 10

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 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.
MSZ12UN MUZ12UN
(Cooling)
MSZ12UN MUZ12UN
(Heating)
This value of frequency is not the same as the actual frequency in operating. Refer to the page 16, 17 for the relationships
between frequency and capacity.
SHF at rating condition = 0.73
Bypass Factor
14
12
10
8
1.5
1.3
1.1
0.9
0.7
0.5
65 75 85
Outdoor intake air DB temperature (°F)
Airflow
21
17
13
9
2.0
1.8
1.6
1.4
1.2
1.0
15 25 35
Outdoor intake air WB temperature (°F)
10
= 388CFM
Airflow
= 0.19
95 105
= 452CFM
45 55
71
67
63
71
67
63
115
65
70
75
75
70
65