Toshiba ESTIA HWS-1501CSHM3-E, Service Manual

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74
8-4.
Outdoor unit
control 4) Current releases shift control
During a cooling operation, this control prevents the electronic parts, such as a compressor drive element, and
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
indoor side (Hydro unit) control part.
* 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]
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 TL sensor temperature.
Item Operation flow and applicable data, etc.
Temperature range 803H-E 1103H-E 1403H-E
50°C TO 10.5 14.1 14.1
45°C TO < 50°C 10.5 14.1 14.1
39°C TO < 45°C 14.0 14.1 16.4
TO < 39°C 16.0 14.1 16.4
TO error 10.5 14.1 14.1
Temperature range 1103H8(R)-E 1403H8(R)-E 1603H8(R)-E
47°C TO 7.5 7.5 7.5
39°C TO < 47°C 7.5 8.7 9.6
10 TO < 39°C 9.6 9.6 9.6
TO error 7.5 7.5 7.5
W1 W2 W3 W4 W5 W6 W7 W8
803H-E 200 230 260 300 340 380 420 460
1103,
1403H-E
1103 to 1603H8(R)-E Upper 200 240 240 260 320 380 480 500
Lower 200 200 200 280 360 400 500 520
W9 WA WB WC WD WE WF
803H-E 520 570 600 630 670 710 740
1103,
1403H-E
1103 to 1603H8(R)-E Upper 530 610 640 660 720 780 890
Lower 550 630 660 700 740 820 910
TL [°C]
58
55
38
35
WE 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