22. VARIOUS PROTECTIONS
1. DISCHARGE GAS TEMPERATURE OVERRISE PREVENSION CONTROL
The discharge gas thermosensor (discharge thermistor : Outdoor side) will detect discharge gas
temperature.
When the discharge temperature becomes higher than Temperature , the compressor frequency
is decreased 20rps, and it continues to decrease the frequency for 20rps every 120 seconds until
the temperature becoms lower than Temperature .
When the discharge temperature becomes lower than Temperature , the control of the control of
the compressor frequency is released.
When the discharge temperature becomes higher than Temperature , the compressor is stopped
and the indoor unit LED starts blinking.
104°C
101°C
110°C
( Table 21 : Discharge Temperature Over Rise Prevension Control / Release Temperature )
Temperature
Temperature
Temperature
2. CURRENT RELEASE CONTROL
The compressor frequency is controlled so that the outdoor unit input current does not exceeds
the current limit velue that was set up with the outdoor temperature.
The compressor frequency returns to the designated frequency of the indoor unit at the time
when the frequency becomes lower than the release value.
( Table 22-1 : Current Release Operation Value / Release Value)
01-20
[ Heating ]
TO : Outdoor Temperature
[ Cooling ]
TO (Control / Release)
9.0A / 8.5A
10.0A / 9.5A
12.5A / 12.0A
14.5A / 14.0A
50°C
46°C
40°C
TO (Control / Release)
10.0A / 9.5A
11.5A / 11.0A
14.5A / 14.0A
14.5A / 14.0A
17°C
12°C
5°C
[ Heating ]
TO : Outdoor Temperature
[ Cooling ]
TO (Control / Release)
9.0A / 8.5A
10.0A / 9.5A
13.0A / 12.5A
16.5A / 16.0A
50°C
46°C
40°C
TO : Outdoor Temperature
TO (Control / Release)
10.0A / 9.5A
11.5A / 11.0A
16.0A / 15.5A
18.0A / 17.5A
17°C
12°C
5°C
Model 30
Model 36
3. ANTIFREEZING CONTROL (Cooling and Dry mode)
The compressor frequency is decrease on cooling & dry mode when the indoor heat exchanger
temperature sensor detects the temperature lower than Temperature .
Then, the anti-freezing control is released when it becomes higher than Temperature .
( Table 23 : Anti-freezing Protection Operation / Release Temperature )
Outdoor temperature
Over than 10°C
*1
or 12°C
*2
Less than 10°C
*1
or 12°C
*2
*1. When the temperature rises.
*2. When the temperature drops.
4°C
7°C
13°C
Temperature
Temperature
AMP Air Conditioning
www.ampair.co.uk | [email protected]
