LG ARTCOOL Series Service Manual page 23

Part 2 Functions & Controls
5.10 DC Peak control
5.10.1 DC Peak Current Error by a fault signal of IPM
• If the operating current of IPM reaches 35A
• If DC PEAK occurs 5 times within 1 hour, the appliance turns off and displays ERROR CODE 6.
5.10.2 DC Peak Current Error by the compressor lock
• If the DC LINK voltage below DC 140V occurs 5 times within 1 hour while the compressor is operating, the appliance
turns off and display ERROR CODE 6.
5.10.3 DC Peak Current Error by the Outdoor Fan Lock
• If this problem occurs 5 times within 1 hour in case of the temperature of outdoor pipe TH is over 65 C while the com-
pressor is operating, the appliance turns off and displays ERROR CODE 6.
5.11 Discharge Pipe Temp Control
• If the temperature of the discharge pipe of compressor reaches over 130°C or below -30°C the compressor stops
instantly.
• The compressor operating frequency is limited according to the compressor dome TH. (Refer to below Fig.)
• Temperature range of COMP SPEC varies by 10°C.
NOTE: Some Models are different by T1, and T2.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3A, the compressor stops instantly.
D-Pipe Temp.
T off °C
T3 °C
T2 °C
T1 °C
-13 °C
COMP Freq. Fh min Free
T1 : 95 ~ 100°C ( Model by model )
T2 : 105 ~ 110°C ( Model by model )
∆T = (T off - T2)/2
T1 = T2 - 2 * ∆T
T3 = T2 + ∆T
Fc-1 Fc-2 OFF Fc-2 Fc-1
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Free
LGE Internal Use Only