Outdoor Fan Control - Mitsubishi Heavy Industries SRK100VNXWZRF Service Manual

(4) Outdoor fan control

(a) Outdoor fan tap and fan motor speed
Model
FDC100
Note 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 heat exchanger temperature (Tho-R1, R2) and the outdoor air temperature (Tho-A).
Note 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 temperature (˚C)
(c) Fan tap control during heating operation
Fan taps are selected depending on the outdoor heat exchanger temperature (Tho-R1, R2) and the outdoor air temperature (Tho-A).
Note It is detected by Tho-R1 or R2, whichever the lower.
zone
zone Tap 3
zone Tap 3
zone Tap 4
zone
zone
zone
3 9
Outdoor air temperature (˚C)
(d) Outdoor fan control at cooling low outdoor air temperature
(i) If the outdoor air temperature (Tho-A) is in the zone
with ±5 – ±30min
Note It is detected by Tho-R1 or R2, whichever the higher.
zone
20
Outdoor air temperature (˚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
(1)
Tap 4 Tap 3
(1)
Tap 3 Tap 2
zone
zone
46 48
30 37
zone zone
Tap 3 Tap 4
Tap 4 Tap 5
(1)
Tap 5 Tap 6
zone zone
zone
12 15 12 15
3 9
Outdoor air temperature (˚C)
-1
to keep high pressure level which is controlled by outdoor heat exchanger temperature (Tho-R1, R2).
zone
200 350 600
(1)
200 350 600
(1)
Note 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 heat exchanger temperature (˚C)
Note If the "silent mode start" signal is received from the remote control, the speed
changes from Tap 4 to Tap 3.
zone zone
1
zone
zone
-2 0
-2 0
Outdoor heat exchanger temperature (˚C) Outdoor heat exchanger temperature (˚C)
in the cooling/dehumidifying mode, outdoor fan is controlled
154
- -
'22 • PAC-SM-422
Fan motor tap
740 820 870
740 820 870
zone
zone
43 53
33 40
zone zone
3 1 3
Unit: min -1
950
950