898841-UIM-B-0113
34
Johnson Controls Unitary Products
22
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.
1. Measure the voltage of posi-
tion 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, mea-
sure the voltage of electrolytic
capacitor C on control panel
(AP1), if its normal, theres mal-
function for the circuit, please
replace the control panel (AP1).
23
Compressor
Min
frequence in
test state
P0
Showing during min. cooling or
min. heating test.
24
Compressor
rated
frequence in
test state
P1
Showing during nominal cooling
or nominal heating test.
25
Compressor
maximum
frequence in
test state
P2
Showing during max. cooling or
max. heating test.
26
Compressor
intermediate
frequence in
test state
P3
Showing during middle cooling
or middle heating test.
27
Overcurrent
protection
of phase
current for
compressor
P5
OFF 3S
and blink
15 times
During cooling and drying
operation, compressor will
stop while indoor fan will
operate; During heating
operation, the complete
unit will stop operation.
Refer to the ProficienTECH
Ductless Splits Technical Train-
ing Manual (IPM protection, loss
of synchronism protection and
overcurrent protection of phase
current for compressor..
28
Charging
malfunction
of capacitor
PU
OFF 3S
and blink
17 times
During cooling and drying
operation, compressor will
stop while indoor fan will
operate; During heating
operation, the complete
unit will stop.
Refer to the part three-charging
ProficienTECH Ductless Splits
Technical Training Manual of
capacitor.
29
Malfunction
of module
temperature
sensor circuit
P7
OFF 3S
and blink
18 times
During cooling and drying
operation, compressor will
stop while indoor fan will
operate; During heating
operation, the complete
unit will stop.
Replace outdoor control panel
AP1.
30
Module high
temperature
protection
P8
OFF 3S
and blink
19 times
During cooling operation,
compressor will stop while
indoor fan will operate;
During heating operation,
the complete unit will stop.
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 radiator is inserted
tightly. If its no use, please
replace control panel AP1.
31
Decrease
frequency
due to high
temperature
resistant
during heat-
ing operation
H0
OFF 3S
and blink
10 times
All loads operate normally,
while operation frequency
for compressor is
decreased.
Refer to the ProficienTECH
Ductless Splits Technical Train-
ing Manual (overload, high tem-
perature resistant).
32
Static
dedusting
protection
H2
OFF 3S
and blink
twice
TABLE 12:
Error Codes - 09K 12K (Continued)
No.
Malfunction
Name
Display Method of Indoor Unit
Malfunction
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
