Protection Control; High Pressure Protection Control; Low Pressure Protection Control; Discharge Temperature Control - LG AMNW07GDBB0 Service Manual

Part 3. Basic Control

6. Protection control

6.1 High pressure protection control

Pressure range
Pd ≥ 4069 kPa
3938 kPa ≤ Pd < 4069 kPa
3840 kPa ≤ Pd < 3938 kPa
3709 kPa ≤ Pd < 3840 kPa
3611 kPa ≤ Pd < 3709 kPa
Pd < 3611 kPa

6.2 Low pressure protection control

n Cooling Mode
Pressure range
Pe > 310 kPa
278 kPa < Pe ≤ 310 kPa
245 kPa < Pe ≤ 278 kPa
212 kPa < Pe ≤ 245 kPa
Pe ≤ 212 kPa
n Heating mode
Pressure range
Pe > 294 kPa
255 kPa < Pe ≤ 294 kPa
229 kPa < Pe ≤ 255 kPa
203 kPa < Pe ≤ 229 kPa
Pe ≤ 203 kPa

6.3 Discharge temperature control

Temperature range
Td ≥ 105 ℃
100℃ ≤ Td < 105℃
95℃ ≤ Td < 100℃
93℃ ≤ Td < 95℃
90℃ ≤ Td < 93℃
Td < 90℃

6.4 Input Current control

Input current
h Remarks: The data of pressure and frequency are different model by model.
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Only for training and service purposes
Normal control
Less than 10A
- 35 -
Compressor
Off
3Hz down
3Hz down
Frequency holding
3 Hz up
Normal control
Compressor
Normal control
3Hz down
3Hz down
3Hz down
Off
Compressor
Normal control
3Hz down
3Hz down
3Hz down
Off
Compressor
Off
5Hz down
5Hz down
Frequency holding
3 Hz up
Normal control
Frequency down
14A or less
Comp off
Over than 14A
LGE Internal Use Only