–17–
8. Defrost Control
• Defrost operation is controlled by timer and sensing the indoor 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.
More than 45 minutes
of heating operation
Within
9min. 45sec.
ON
OFF
ON
ON
ON
ON
OFF
OFF
COMPRESSOR
4-WAY VALVE
INDOOR FAN
-6
°
C ON
12
°
C OFF
The outdoor
piping Temp.
ON
More than 10 min.
running of compressor
More than 45 minutes
of heating operation
5sec.
HOT-
START
ON
9. 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
Accident Point
CH 01
Indoor room temperature thermistor error
CH 02
Indoor piping thermistor error
CH 03
Indoor main body / Remote controller unit communication error
CH 04
Water level float switch error
