Toshiba HWS-P805XWHM3-E(TR) Service Manual page 76

Item
8-4. 4) Current releases shift control
Outdoor unit
During a cooling operation, this control prevents the electronic parts, such as a compressor drive element, and
control
compressor from failing.
• The current release control value (I) is selected from the following table according to the TO sensor value.
Current release control value (I)
5) 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]
Upper
Lower
Upper
Lower
5-1) 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 TG. (TG: temperature converted from PD)
TG [°C]
58
55
38
35
Temperature range
38 °C ≤ TO
29 °C ≤ TO < 38 °C
15 °C ≤ TO < 29 °C
5 °C ≤ TO < 15 °C
0 °C ≤ TO < 5 °C
-4 °C ≤ TO < 0 °C
TO < -4 °C
TO error
Operation flow and applicable data, etc.
Temperature range
50 °C ≤ TO
45 °C ≤ TO < 50 °C
39 °C ≤ TO < 45 °C
TO < 39 °C
TO error
W1 W2 W3
200 240 240
0 0 200
W9 WA WB
530 610 640
550 630 660
WE tap
+ 1 tap/20 secs
(Up to the maximum number of rotation for each zone)
Number of rotation hold
- 1 tap/20 secs
(Up to the minimum number of rotation for each zone)
Less than 20 Hz
Minimum Maximum
W6
W5
W4
W3
W2
W2
W1
W1
P805HR-E, P1105HR-E
14.1
14.1
14.1
14.1
14.1
W4 W5 W6
260 320 380
280 360 400
WC WD WE
660 720 780
700 740 820
20 Hz or more to less
than 45 Hz
Minimum Maximum
WC W8 WC
WB W7 WB
W8 W6 WA
W6 W5 W8
W4 W4 W6
W3 W3 W5
W2 W1 W4
WC W1 WC
75
W7 W8
480 500
500 520
WF
890
910
45 Hz or more
Minimum Maximum
WA WD
W9 WC
W8 WC
W7 WA
W5 W8
W4 W6
W2 W6
W2 WD