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44 Room Air Conditioner
• 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.
• 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.
Operation
Portection from overheating of power module
Portection from overheating of compressor
T off °C
T2 °C
Heat Sink Temp.
T1 °C
T on °C
COMP
Freq.
Free OFF FreeFc-1 Fc-1Fc-2 Fc-2
∆T = (T off - T on)
T1 = T on + ∆T
T2 = T on + 2
*
∆T
D-Pipe Temp.
COMP Freq. Free Free
Fh min
OFFFc-1 Fc-1Fc-2 Fc-2
∆T = (T off - T2)/2
T1 = T2 + 2
*
∆T
T3 = T2 + ∆T
No. MODEL T on T off
1 AS-W096U_0 Series 85 95
2 AS-W126U_0 Series 85 95
3 AS-W096U_1 Series 85 95
4 AS-W126U_1 Series 85 95
No. MODEL T on T off
1 AS-W096U_0 Series 102 110
2 AS-W126U_0 Series 88 100
3 AS-W096U_1 Series 95 105
4 AS-W126U_1 Series 95 105