Outdoor Fan Control (Master Unit/Slave Unit); Outdoor Fan Speed And Fan Motor Rotation Speed; Outdoor Fan Control In Cooling Mode; Outdoor Fan Control In Heating Mode - Mitsubishi Heavy Industries Hi-COP Series Service Manual

(3) Outdoor fan control (Master unit/slave unit)

(a) Outdoor fan speed and fan motor rotation speed
Fan tap
0th speed
1st speed
2nd speed
3rd speed
4th speed
5th speed
6th speed
7th speed
8th speed
9th speed
10th speed
11th speed
12th speed
(b)

Outdoor fan control in cooling mode

Fan speed is controlled based on the high pressure during cooling/dehumidifying (detected with PSH) and the outdoor air
temperature (detected with Tho-A).
(i) Initial fan speed is as follows.
Initial cooling speed of outdoor fan
Outdoor temperature ≦ 10°C
(ii) Speed changes depending on high pressure values.
(c) Outdoor fan control in heating mode
Fan speed is controlled based on the low pressure (detected with PSL) during heating operation.
(i) Speed changes depending on low pressure values.
(ii) Under normal condition, the stepless fan control between st speed and th speed is performed.
Cooling
FMo1 FMo2
0
0
200
300
400
500
600
700
800
900
1000 1000
1100 1100
1140 1140
10°C ≦ Outdoor temperature ＜ 15°C
2nd speed
Heating
FMo1
0 0
160 0
200 0
300 160
400 1140
500 −
600 −
700 −
800 −
900 −
−
−
−
4th speed

– –
'14 • KX-SM-204
Remarks
FMo2
0
160 Min. speed at 1 FM operation
Max. speed at 1 FM operation
400
(During heating)
Min. speed at 2 FM operation
160
(During heating)
Max. speed at 2 FM operation
1140 (During heating)
Rated speed of heating
−
−
−
−
−
−
−
− Rated speed of cooling
15°C ≦ Outdoor temperature
6th speed
-1
Unit : min
stop