Current Release Control; Release Protective Control By Temperature Of Indoor Heat Exchanger; In Cooling/Dry Operation - Toshiba RAS-07PKVP-E Service Manual

High Wall, Heat Pump Type
8-6. Current Release
Control
This function prevents troubles on the electronic parts
of the compressor driving inverter.
This function also controls drive circuit of the
compressor speed so that electric power of the
compressor drive circuit does not exceed the specified
value.
Outdoor unit inverter main
circuit control current
Operating current Setup value
YES
Capacity control continues.
Cooling current
Outdoor temp.
release value
07PAVP-E
07PAVP-ND
10PAVP-E
10PAVP-ND
50°C TO
5.40A
45°C TO<50°C
40°C TO<45°C
6.00A
16°C TO<40°C
11°C TO<16°C
6.53A
–5°C TO<11°C
TO<–5°C
6.90A
1) The input current of the outdoor unit is detected
in the inverter section of the outdoor unit.
2) According to the detected outdoor
temperature, the specified value of the current
is selected.
3) Whether the current value exceeds the
specified value or not is judged.
4) If the current value exceeds the specified
value, this function reduces the compressor
speed and controls speed up to the closest one
commanded from the indoor unit within the
range which does not exceed the specified
value.
Outdoor temp.TO
Setup of current release point
NO
Reduce compressor speed
Current decrease
Heating current
release value
13PAVP-E 07PAVP-E 13PAVP-E
13PAVP-ND 07PAVP-ND 13PAVP-ND
16PAVP-E 10PAVP-E 16PAVP-E
16PAVP-ND 10PAVP-ND 16PAVP-ND
18PAVP-E 18PAVP-E
18PAVP-ND 18PAVP-ND
6.00A
7.72A 7.72A
7.20A
8.77A 8.25A 8.25A
8.77A 8.77A
6.90A
8-7. Release Protective
control by
Temperature of Indoor
Heat Exchanger

8-7-1. In Cooling/Dry Operation

Prevent-freezing control for indoor heat
exchanger
In cooling/dry operation, the sensor of indoor heat
exchanger detects evaporation temperature and
controls the compressor speed so that temperature of
the heat exchanger does not exceed the specified
value.
Usual cooling capacity control
7° C
6°C
5°C
Reduction of compressor speed
1) When temperature of the indoor heat
exchanger drops below 5°C, the compressor
speed is reduced. (P zone)
2) When temperature of the indoor heat
exchanger rises in the range from 6°C to under
7°C, the compressor speed is kept. (Q zone)
3) When temperature of the indoor heat
exchanger rises to 7°C or higher, the capacity
control operation returns to the usual control in
cooling operation.
(R zone)
39
Service Manual
R
When the value is
in Q zone, the
Q
compressor speed
is kept.
P