64
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
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]
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)
HWS-P805HR-E, P1105HR-E
Item Operation flow and applicable data, etc.
Temperature range P805HR-E, P1105HR-E
50 °C ≤ TO 14.1
45 °C ≤ TO < 50 °C 14.1
39 °C ≤ TO < 45 °C 14.1
TO < 39 °C 14.1
TO error 14.1
W1 W2 W3 W4 W5 W6 W7 W8
P805HR-E,
P1105HR-E
Upper 200 240 240 260 320 380 480 500
Lower 0 0 200 280 360 400 500 520
W9 WA WB WC WD WE WF
P805HR-E,
P1105HR-E
Upper 530 610 640 660 720 780 890
Lower 550 630 660 700 740 820 910
TG [
°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
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 WC WA WD
29 °C ≤ TO < 38 °C W5 WB W7 WB W9 WC
15 °C ≤ TO < 29 °C W4 W8 W6 WA W8 WC
5 °C ≤ TO < 15 °C W3 W6 W5 W8 W7 WA
0 °C ≤ TO < 5 °C W2 W4 W4 W6 W5 W8
-4 °C ≤ TO < 0 °C W2 W3 W3 W5 W4 W6
TO < -4 °C W1 W2 W1 W4 W2 W6
TO error W1WCW1WCW2WD
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