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113 PB
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
Power
Indicator
Cool
Indicator
Heating
Indicator
Yellow
Indicator
Red
Indicator
Green
Indicator
21 voltage for
DC bus bar is
too high high
PH OFF 3s
and blink
11 times
OFF 1s
and blink
13 times
During cooling and drying op‑
eration, 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 265VAC, turn
on the unit after the supply
voltage is increased 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)
22 voltage of DC
bus‑ bar is
too low
PL OFF 3s
and blink
21 times
OFF 1s
and blink
12 times
During cooling and drying op‑
eration, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop
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 increased to the
normal range.
2.If the AC input is normal,
measure the voltage of elec‑
trolytic capacitor C on control
panel (AP1), if its normal,
there is a malfunction for the
circuit, replace the control
panel (AP1)
23 compres‑
sor min
frequence in
test state
P0 during
blinking
ON 0.25s
and OFF
0.25s
during
blinking
ON 0.25s
and OFF
0.25s
Showing during nominal cool‑
ing or nominal heating test
24 compres‑
sor rated
frequence in
test state
P1 during
blinking
ON 0.25s
and OFF
0.25s
during
blinking
ON 0.25s
and OFF
0.25s
Showing during middle cool‑
ing or middle heating test
25 compressor
maximum
frequence in
test state
P2 during
blinking
ON and
0.25s and
OFF and
0.25s
during
blinking
ON and
0.25s and
OFF and
0.25s
Showing during max. cooling
or max. heating test
TROUBLESHOOTING
Diagnostic Codes
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