Defrost Control; Self-Diagnosis Function - LG LB-E608HL Service Manual

6. Defrost Control

• Defrost operation is controlled by timer and sensing the outdoor piping temperature.
• The defrost starts only when the outdoor pipe temperature falls below -6°C after 45 minutes passed from starting
of heating operation.
• Defrost ends after 9 minutes 30 seconds passed from starting of defrost operation or when the outdoor pipe
temperature rises over 12°C even if before 12 minutes.
Outdoor Pipe Temp.
Indoor Fan
Compressor
4-Way Valve

7. Self-Diagnosis Function

• 'CHECK' will flash in the remote controller display when a problem occurs. Then please contact your dealer.
• Correct the accident point as shown in the table below before restarting operation.
• During the normal operation 'CHECK' won't be displayed in the remote controller.
Remote controller LCD
More than 45 minutes of
heating operation
More than 10 min.
running of compressor
ON
ON
ON
F 1
F2
F 3
Within
12minutes
Defrost
OFF
ON
OFF
Accident Point
Indoor temperature thermistor error
Indoor piping thermistor error
Indoor unit & remote controller
–11–
More than 45 minutes of
heating operation
More than 10 min.
running of compressor
HOT-
START
ON
ON
ON
Defrost
OFF
ON
OFF