Outdoor Fan Control - Mitsubishi Heavy Industries FDT100VNAWVH Service Manual

(4)

Outdoor fan control

(a) Outdoor fan tap and fan motor speed
Model
100-140
Note (1) If the "silent mode start" signal is received from the remote control and SW7-3 is ON, the speed changes from 600 to 500.
(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 Tap 5
zone Tap 5
zone Tap 4
zone Tap 3
zone
zone
15 18
Outdoor air temperature (˚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 Tap 3
zone Tap 3
zone Tap 4
zone
zone zone
3
Outdoor air temperature (˚C)
(d) Outdoor fan control at cooling low outdoor air
(i) If the outdoor air temperature (Tho-A) is in the zone
with ±5 – ±30min
(Tho-R1, R2).
Note (1) Whichever the higher.
zone
Outdoor air temperature (˚C)
Mode
Cooling/Dehumidifying
Heating
zone zone zone
Tap 5 Tap 5
Tap 5 Tap 4
(1)
Tap 4 Tap 3
(1)
Tap 3 Tap 2
zone
zone
46 48
30 37
zone zone zone
Tap 3 Tap 4
Tap 4 Tap 5
(1)
Tap 5 Tap 6
zone zone
zone
12 15 12 15
9 3 9
Outdoor air temperature (˚C)
-1
to keep high pressure level which is controlled by outdoor unit heat exchanger temperature
zone
20
➀ speed ➁ speed ➂ speed ➃ speed ➄ speed ➅ speed ➆ speed
200 350 600
(1)
200 350 600
(1)
Note (1) If the "silent mode start" signal is received from the remote control,
zone
the speed changes from Tap 4 to Tap 3.
Tap 4
Tap 3
Tap 2
Tap 1
zone
zone
20 30
Outdoor unit heat exchanger temperature (˚C)
Note (1) If the "silent mode start" signal is received from the remote control, the speed changes
from Tap 4 to Tap 3.
zone
1
zone zone
-2 0 -2
Outdoor unit heat exchanger temperature (˚C) Outdoor unit heat exchanger temperature (˚C)
in the cooling/dehumidifying mode, outdoor fan is controlled
43
- -
'19 • PAC-SM-309
Fan motor tap
740 820 870
740 820 870
zone
zone
43 53
33 40
zone zone
zone
3 1 3
0
-1
Unit: min
950
950