59
Fault Displays
9,000 and 12,000 btuh units
No.
Malfuntiuon
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
0.5ws and OFF 0.5s
Operation
Indicator
Cool
Indicator
Heating
Indicator
Yellow
Indicator
Red
Indicator
Green
Indicator
7
High
temperature
resistant
protection
E8
OFF 3S
and blink
8 times
OFF
3S and
blink 6
times
During cooling and
drying operation,
compressor and outdoor
fan stop while indoor
fan operates. During
heatin operation, all
loads stop
Refer to the malfunction
analysis (overload, high
temperature resistant).
8
EEPROM
malfunction
EE
OFF
3S and
blink 15
times
OFF
3S and
blink 11
times
During cooling and
drying operation,
compressor and outdoor
fan stop while indoor
fan operates. During
heatin operation, all
loads stop
Replace outdoor control
panel AP1
9
Limit/decrease
frequency
due to high
temperature of
module
EU
OFF
3S and
blink 6
times
OFF
3S and
blink 6
times
All loads operate
normally, while
operation frequency for
compressor is decreased
Discharging after
the complete unit is
de-energized for 20
mins, check whether
the thermal grease on
IPM module of outdoor
control panel AP1 is
sufficient and whether
the radiateor is inserted
tightly. If its no use,
please replace control
panel AP1.
10
Malfunction
protection of
jumper cap
C5
OFF 3S
and blink
15 times
Wireless remote
receiver and button
are effective, but can
not dispose the related
command
1. No jumper cap
insert on mainboard;
2. Incorrect insert of
jumper cap; 3. Jumper
cap damaged; 4.
Abnormal detecting
circuit of mainboard.
11
Gathering
refrigerant
F0
OFF 3S
and blink
1 time
OFF
3S and
blink 1
time
When the outdoor
unit receive signal of
Gathering refrigerant,
the system will be
forced to run under
cooling mode for
gathering refrigerant
Nominal cooling mode
