73
Fault Displays
18,000 and 24,000 btuh units
Malfunction
Name
Indoor Unit Displaying Method
Outdoor Unit Display (LED)
A/C Status
Malfunctions
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
Running
LED
Cooling
LED
Heating
LED
D40/
D5
D41/
D6
D42/
D16
D43/
D30
Malfunction of
complete units
current detection
U5
OFF 3s
and blink
13 times
o
n
¶
n
During cooling and
drying operating,
the compressor will
stop while indoor fan
will operate; During
heating operation the
complete unit will
stop operating
Theres circuit
malfunction on
outdoor units
control panel AP1,
please replace
the outdoor units
control panel AP1
Overcurrent
protection of
phase current for
compressor
P5
OFF 3s
and blink
15 times
o
¶
o
o
During cooling and
drying operating,
the compressor will
stop while indoor fan
will operate; During
heating operation the
complete unit will
stop operating
Refer to the
malfunction analysis
(IPM protection,
loss of synchronism
protection and
overcurrent
protection of
phase current for
compressor.
Defrosting
H1
OFF
3s and
blink
once
Defrosting will
occur in heating
mode. Compressor
will operate while
indoor fan will stop
operation
It’s the normal state
Static dedusting
protection
H2
OFF
3s and
blink
twice
/
/
Overload
protection for
compressor
H3
OFF
3s and
blink 3
times
o
¶
¶
o
During cooling and
drying operation,
compressor will stop
while indoor fan
will operate; During
heating operation,
the complete unit
will stop operation.
1. Wiring terminal
OVC-COMP is
loosened. In normal
state, the resistance
for this terminal
should be less than
1ohm 2. Refer to
the malfunction
analysis (discharge
protection,
overload)
o
= OFF
n
= Illuminated
¶
= Blink
