99
Fault Displays
Models GWH09MB-D3DNA3D & GWH12MB-D3DNA3D
Malfunction
Name
Indoor Unit
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
Cool
Heating
Yellow
Red
Green
Voltage of
DC bus-bar
is too high
PH
Off 3S and
blink 11
times
Off 3S
and blink
13 times
During cooling
and drying
operation,
compressor
will stop while
indoor fan
will operate.
During heating
operation,
the complete
unit will stop
operation.
1. Measure the voltage
of position L and N on
wiring board (XT), if the
voltage is higher than
150VAC, turn on the unit
after the supply voltage
is increase to the normal
range; 2. If the AC input
is normal, measure the
voltage of electrolytic
capacitor C on control
panel (AP1), if its normal,
theres malfunction for the
circuit, please replace the
control panel (AP1)
Voltage of
DC bus-bar
is too low
PL
Off 3S and
blink 21
times
Off 3S
and blink
12 times
During cooling
and drying
operation,
compressor
will stop while
indoor fan
will operate.
During heating
operation,
the complete
unit will stop
operation.
1. Measure the voltage
of position L and N on
wiring board (XT), if the
voltage is higher than
150VAC, turn on the unit
after the supply voltage
is increase to the normal
range; 2. If the AC input
is normal, measure the
voltage of electrolytic
capacitor C on control
panel (AP1), if its normal,
theres malfunction for the
circuit, please replace the
control panel (AP1)
Compres-
sor Min
frequency in
test state
P0
blinking
in cool
mode,ON
0.25s and
OFF 0.25s
blinking
in heat
mode,ON
0.25s and
OFF 0.25s
Showing during min.
cooling or min. heating
test
Compres-
sor rated
frequency in
test state
P1
blinking
in cool
mode,ON
0.25s and
OFF 0.25s
blinking
in heat
mode,ON
0.25s and
OFF 0.25s
Showing during nominal
cooling or nominal heat-
ing test
