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COOL
Fan speed changes so that the condensing temperature stays within the target range.
Fan speed
Revolution per minutes (rpm)
MXZ-2B20NA-
1
MXZ-3B
MXZ-4B
1 100 100
2 150 150
3 200 200
4 250 250
5 300 300
6 350 350
7 400 400
8 450 450
9 500 500
10 550 550
11 600 600
12 650 650
13 700 700
14 750 750
HEAT
Fan speed is switched according to the compressor frequency.
Fan speed
Compressor speed (Hz)
MXZ-2B20NA-
1
MXZ-3B
MXZ-4B
Up 30 50
Down 23 40
Frequency (Hz) Target condensing temperature (°F/°C)
~24 87.8/31-95.0/35
25~34 91.4/33-98.6/37
35~44 95.0/35-102.2/39
45~54 98.6/37-105.8/41
55~64 98.6/37-105.8/41
65~ 98.6/37-105.8/41
MXZ-2B20NA-
1
MXZ-3B MXZ-4B
3-6. OUTDOOR FAN CONTROL
Fan speed is switched according to the number of operating indoor unit and the compressor frequency.
Up
Down
Fan speed
High
Low
Compressor frequency
Min.
Max.
NOTE: When the indoor coil thermistor is 134.6 ˚F (57°C) or more on HEAT operation, fan speed is fixed to Low speed.
Or, the indoor coil thermistor is 113 ˚F (45°C) or less on HEAT operation, fan speed is back to normal.
<Relation between compressor frequency and fan speed>
Compressor frequency (Hz)
Down Up
MXZ-2B20NA 30 40
Up
Down
Fan speed
High
Low
Compressor frequency
Min.
Max.
MXZ-2B20NA