DOWNLOAD LG LS-H126RLN1 / LS-H096QLN1 / LS-H076QLN0 / S12LHH Service Manual ↓ Size: 4.51 MB | Pages: 67 in PDF or view online for FREE

Model
LS-H126RLN1 LS-H096QLN1 LS-H076QLN0 S12LHH
Pages
67
Size
4.51 MB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner
File
ls-h126rln1-ls-h096qln1-ls-h076qln0-s12lhh.zip
Date
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LG LS-H126RLN1 / LS-H096QLN1 / LS-H076QLN0 / S12LHH Service Manual ▷ View online

Service Manual  61
Troubleshooting Guide 
When Heating does not operate
Operate “Heating Mode(     )” by setting the desired temperature of the
remote control is higher than one of the indoor temperature by 2°C at
least.
In heating Mode, the indoor fan operates in case the pipe temperature
is higher than 28°C.
Check the connector of intake and pipe sensor(thermistors)
• Check the related circuit of RY-4WAY
• Check the indoor room temperature is disconnected or not (about
10K
Ω/at 25°C).
• Check the indoor pipe temperature is disconnected or not (about
5K
Ω/at 25°C).
Turn ON Main Power
Check the DC voltage on the PWB ASSEMBLY
• The details of check are as followings
Check point
Between Micom
(NO.59) and GND
Between IC01M
(NO.11) and GND
Comp ON
DC 5V
Below DC 1V
Comp OFF
DC 0V
About DC
12V
Check point
Between Micom
(NO.51) and GND
Between IC02M
(NO.11) and GND
4 way ON
DC 5V
Below DC 1V
4 way OFF
DC 0V
About DC 12V
Check point
Between Micom
(NO.53) and GND
Between IC02M
(NO.12) and GND
Fan ON
DC 5V
Below DC 1V
Fan OFF
DC 0V
About DC 12V
• Comp Relay.
• 4 way Relay
• Outdoor fan Relay
62 Room Air Conditioner
Troubleshooting Guide 
Turn off Main Power
• Check the electrical wiring diagram of outdoor side.
• Check the abnormal condition for the component of
Compressor/Outdoor Fan Motor, 4 way.
• Check the "open" or "short" of connecting wires between indoor and
outdoor.
Service Manual  63
Exploded View 
Exploded View 
346810
35211B
135516
352150
266090
267110
146811
131410
135511
359011
668713
753010
342800
159901
268712
159830
135311
135312
249951
733010
152313
135314
152302
668713
268714-1
268714-2
W0CZZ
W6640
263230
264110
354210
Indoor Unit
64 Room Air Conditioner
Exploded View 
554031
437212
435511
W0CZZ
552202
567502
552116
552201
554160
561410
552111
550140
552203-1
552203-2
430410
447910
649950
552102
437210
435301
559010
546810
Outdoor Unit
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