88
7-4.
Outdoor unit
control
4) Outdoor fan control
The outdoor side control part controls the number of fan motor rotations by receiving an operation instruction from the
Hydro side (Hydro unit) control part.
For sensing the true outside temperature, fan is operated without compressor operation.
* Although the fan motor is a DC motor, which has non-step variable numbers of rotations, it is limited to some steps for convenience of
control.
The number of fan tap rotation allocation [rpm]
4-1) Cooling fan control
• The TL sensor, TO sensor and operation frequency control the outdoor fan. The control is performed by 1 tap of
the DC fan control (14 taps).
• For 60 seconds after the start, the maximum fan tap for each zone that is shown in the following table is fixed. After
that, the fan is controlled according to the TL sensor (401, 601), TG (801, 1101). (TG: temperature converted from
PD)
Item Operation flow and applicable data, etc.
W1 W2 W3 W4 W5 W6 W7 W8
401, 601 240 320 320 390 400 470 510 550
801, 1101 200 200 200 230 260 290 330 360
W9 WA WB WC WD WE WF
401, 601 560 570 570 650 700 750 830
801, 1101 410 450 480 500 540 570 600
TL [
°C
]
56
53
38
35
WF tap
+ 1 tap / 20 secs
(Up to the maximum number of rotation for each zone)
- 1 tap / 20 secs
(Up to the minimum number of rotation for each zone)
Number of rotation hold
Temperature range
Less than 20 Hz
20 Hz or more to less
than 45 Hz
45 Hz or more
Minimum Maximum Minimum Maximum Minimum Maximum
38°C ≤ TO W6 WC W8 WF WA WF
29°C ≤ TO < 38°CW5WBW7WDW9WD
15°C ≤ TO < 29°C W4 W8 W6 WA W8 WC
5°C ≤ TO < 15°C W3 W6 W5 W8 W7 WA
TG [
°C
]
58
55
38
35
WF tap
+ 1 tap / 20 secs
(Up to the maximum number of rotation for each zone)
- 1 tap / 20 secs
(Up to the minimum number of rotation for each zone)
Number of rotation hold
Temperature range
Less than 20 Hz
20 Hz or more to less
than 45 Hz
45 Hz or more
Minimum Maximum Minimum Maximum Minimum Maximum
38°C ≤ TO W6 WC W8 WE WA WE
29°C ≤ TO < 38°CW5WBW7WDW9WD
15°C ≤ TO < 29°C W4 W8 W6 WA W8 WC
5°C ≤ TO < 15°C W3 W6 W5 W8 W7 WA
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