Outdoor Unit Fan Control - Mitsubishi Heavy Industries SRK100VNXPZSX Technical Manual

(4)

Outdoor unit fan control

(a) Outdoor unit fan tap and fan motor speed
Model
FDC100, 125, 140
(b) Fan tap control during Cooling/Defumidifying 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 higher.
zone
zone Tap 5
zone Tap 5
zone Tap 4
zone Tap 3
zone
zone
15 18
Outdoor air temp. (˚C)
(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
Outdoor air temp. (˚C)
Mode
➀ speed ➁ speed ➂ speed ➃ speed ➄ speed ➅ speed ➆ speed
Cooling/Dehumidifying
Heating
zone zone
Tap 5 Tap 5
Tap 5 Tap 4
Tap 4 Tap 3
Tap 3 Tap 2
zone
zone
46 48
30 37
zone zone
Tap 3 Tap 4
Tap 4 Tap 5
Tap 5 Tap 6
zone
12 15
zone
Outdoor unit fan speed
-10 min
10
Fan motor tap
200 370 560
200 370 560
• Silent mode only
zone
Tap 4 zone Tap 5
Tap 3 zone Tap 5
Tap 2 zone Tap 4
Tap 1 zone Tap 3
zone
zone
20 30
Outdoor unit heat exchanger temp. (˚C)
• Silent mode only
zone
zone Tap 3 Tap 3
zone Tap 3 Tap 3
zone Tap 4 Tap 5
zone
1
zone
-2 0
Outdoor unit heat exchanger temp. (˚C)
in the cooling/dehumidifying mode, it has elapsed 20
Retained
-1
20
Outdoor unit heat exchanger temp. (˚C)
75
- -
'17 • PAC-T-257
640 745 870
650 830 870
zone zone zone
Tap 5 Tap 5
Tap 5 Tap 3
Tap 3 Tap 3
Tap 3 Tap 2
zone
zone
43 53
33 40
zone zone
Tap 3
Tap 5
Tap 6
zone
3
Outdoor unit fan speed
+10 min -1
30
-1
Unit: min
910
910
zone
Tap 4
Tap 3
Tap 2
Tap 1