48
Service Manual
Installation and Maintenance
NO.
Malfunction
Name
Display Method of Indoor Unit Display Method of Outdoor Unit
A/C status Possible Causes
Dual-8
Code
Display
Indicator Display (during
blinking, ON 0.5s and OFF
0.5s)
Indicator has 3 kinds of display
status and during blinking, ON
0.5s and OFF 0.5s
Operation
Indicator
Cool
Indicator
Heating
Indicator
Yellow
Indicator
Red
Indicator
Green
Indicator
53
Normal
communica-
tion
continously
54 Defrosting
OFF 3S
and blink
once
(during
blinking,
ON 10s
and OFF
0.5s)
OFF 3S
and blink
twice
Defrosting will occur in
heating
mode. Compressor will
operate
while indoor fan will stop
operation.
Its the normal state
55
Refrigerant
leakage
protection
F0
OFF
1s and
blink 9
times
The Dual-8 Code Display
will show F0 and the
complete unit stops.
1.Refrigerant leakage;
2.Indoor evaporator
temperature sensor works
abnormally;
3.The unit has been plugged
up somewhere.
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