LG AS-W0964DH0 Service Manual page 37

Portection from overheating of power module
• If the temperature of the heat sink TH. reaches over Toff, the Compressor stop instantly.
• It will be limited the compressor operating frequency according to the heat sink TH.(refer to below FIG.)
• It will be blink 4 times, when the thermistor is open or short, also the temperature is over Toff.
T = (T off - T on)
T1 = T on + T
T2 = T on + 2 * T
T off C
T2 C
T1 C
T on C
COMP
Free Fc-1
Freq.
Portection from overheating of compressor
• If the temperature of the discharge pipe of compressor reaches over 130°C or below -30°C the compressor
stop instantly.
• It will be limited the compressor operating frequency according to the compressor dome TH.(Refer to below
Fig.)
• Temperature range by COMP SPEC varies by 10°C.
D-Pipe Temp.
T off C
T3 C
T2 C
T1 C
-13 C
COMP Freq. Free
Fh min
Heat Sink Temp.
Fc-2 Fc-1 Fc-2 OFF
T = (T off - T2)/2
T1 = T2 - 2 * T
T3 = T2 + T
Fc-1 Fc-2 OFF Fc-2
No.
1
2
3
Free
No.
1
2
3
Fc-1 Free
MODEL T on
AS-W0964DH0 95
AS-W1264DH0 95
AS-W1865DH0 85
MODEL T on
AS-W0964DH0 95
AS-W1264DH0 95
AS-W1865DH0 98
Service Manual 37
Operation
T off
105
105
95
T off
105
105
108