LG Electronics General Wall Mounted-Inverter Type manual Overheating Protection Power Module

Part 2 Functions & Controls

5.8 Overheating Protection (Power Module)

5.8.1 9,12kBtu/h Model

•If the temperature of the heat sink thermistor. reaches over Toff, the Compressor stop instantly.

•The compressor operating frequency is limited according to the heat sink thermistor. (refer to below FIG.)

•It will blink 4 times, when the thermistor is open or short, also when the temperature is over T off.

	∆T = (T off - T on)/3					Heat Sink Temp.
	T1 = T on + ∆T
T off °C	T2 = T on + 2 * ∆T
T2 °C
T1 °C
T on °C
COMP	Free	Fc-1	Fc-2	Fc-1	Fc-2	OFF	Free
Freq.

T on : 85°C(185°F) (Model by Model)

T off : 95°C(203°F) (Model by Model)

NOTE: Some Models are different by Ton, and Toff.

Service Manual 21