Toshiba HWS-803XWHM3-E Service Manual page 75

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)
Temperature range
45°C
39°C
Temperature range
39°C
10
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]
803H-E
1103,
1403H-E
1103 to 1603H8(R)-E
803H-E
1103,
1403H-E
1103 to 1603H8(R)-E
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.
TL [°C]
58
55
38
35
Operation flow and applicable data, etc.
803H-E
50°C TO 10.5
TO < 50°C 10.5
TO < 45°C 14.0
TO < 39°C 16.0
TO error 10.5
1103H8(R)-E
47°C TO 7.5
TO < 47°C 7.5
TO < 39°C 9.6
TO error 7.5
W1
200
Upper 200
Lower 200
W9
520
Upper 530
Lower 550
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)
1103H-E 1403H-E
14.1 14.1
14.1 14.1
14.1 16.4
14.1 16.4
14.1 14.1
1403H8(R)-E 1603H8(R)-E
7.5 7.5
8.7 9.6
9.6 9.6
7.5 7.5
W2 W3 W4 W5
230 260 300 340
240 240 260 320
200 200 280 360
WA WB WC WD
570 600 630 670
610 640 660 720
630 660 700 740
74
W6 W7 W8
380 420 460
380 480 500
400 500 520
WE WF
710 740
780 890
820 910