Mitsubishi Heavy Industries SRK100VNXPZSX Technical Manual page 182

(c) Fan tap control during heating operation
Fan taps are selected depending on the outdoor unit heat exchanger temperature (Tho-R1, R2) and the outdoor air temperature (Tho-A).
Note (1) It is detected by Tho-R1 or R2, whichever the lower.
zone
zone Tap 3
zone Tap 3
zone Tap 4
zone
zone
3 9
Outdoor air temp. (˚C)
(d) Outdoor unit fan control at cooling low outdoor air
(i) When all the following conditions are established after the start of compressor, the following control is implemented.
If the outdoor air temperature (Tho-A) is in the zone
seconds from the start of outdoor unit fan and the outdoor unit fan is at the tap 1 speed, the outdoor unit fan speed is
controlled according to the outdoor unit heat exchanger temperature (Tho-R1, R2).
Note (1) It is detected with Tho-R1 or R2, whichever the higher.
zone
5 10
Outdoor air temp. (˚C)
(ii) The outdoor unit heat exchanger temperature is detected always and, when the number of revolutions of the outdoor
fan speed has been increased or decreased, there is no change of fan speed for 20 seconds.
(iii) Rage of the outdoor unit fan speed under this control is as follows.
1) Lower limit: 130min
2) Upper limit: 500min
(iv) As any of the following conditions is established, this control terminates.
1) When the outdoor air temperature is in the zone
higher is established for 40 seconds or more continuously.
2) When the outdoor fan speed is 500min
established for 40 seconds or more continuously.
3) When the outdoor unit heat changer temperature at 45°C or higher is established for 40 seconds or more.
Note (1) If the "silent mode start" signal is received from the remote control, the speed changes
zone zone
Tap 3 Tap 4
Tap 4 Tap 5
(1)
Tap 5 Tap 6
zone
12 15
zone
Outdoor unit fan speed
-10min
-1
-1
-1
-
from Tap 4 to Tap 3.
zone
zone
1 3
zone
-2 0
Outdoor unit heat exchanger temp. (˚C)
in the cooling/dehumidifying mode, it has elapsed 20
Outdoor unit fan speed
+10min
Retained
-1
20 30
Outdoor unit heat exchanger temp. (˚C)
and the outdoor unit heat exchanger temperature at 30°C or
and the outdoor unit heat exchanger temperature at 30°C or higher is
181
-
'17 • PAC-T-257
-1