Filter
Top Products
898841-UIM-B-0113
Johnson Controls Unitary Products 35
33
Overload
protection for
compressor
H3
OFF 3S
and blink
3 times
OFF 3S
and blink
8 times
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 ProficienTECH
Ductless Splits Technical Train-
ing Manual ( discharge protec-
tion, overload).
34
System is
abnormal
H4
OFF 3S
and blink
4 times
OFF 3S
and blink
6 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 (overload, high tem-
perature resistant).
35
IPM
protection
H5
OFF 3S
and blink
5 times
OFF 3S
and blink
4 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.
36
Module
temperature
is too high
H5
OFF 3S
and blink
5 times
OFF 3S
and blink
10 times
37
Internal
motor
(fan motor)
do not
operate
H6
OFF 3S
and blink
11 times
Internal fan motor, exter-
nal fan motor, compressor
and electric heater stop
operation, guide louver
stops at present location.
1. Bad contact of DC motor
feedback terminal.
2. Bad contact of DC motor
control end.
3. Fan motor is stalling.
4. Motor malfunction.
5. Malfunction of mainboard rev
detecting circuit.
38
Desynchro-
nizing of
compressor
H7
OFF 3S
and blink
7 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.
39
PFC
protection
HC
OFF 3S
and blink
6 times
OFF 3S
and blink
14 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.
40
Outdoor DC
fan motor
malfunction
L3
OFF 3S
and blink
23 times
OFF 3S
and blink
14 times
Outdoor DC fan motor
malfunction lead to com-
pressor stop operation.
DC fan motor malfunction or
system blocked or the connector
loosed
41
Power
protection
L9
OFF 3S
and blink
20 times
OFF 3S
and blink
9 times
Compressor stop opera-
tion and Outdoor fan
motor will stop 30s latter,
3 minutes latter fan motor
and compressor will
restart.
To protect the electronical
components when detect high
power.
42
Indoor unit
and outdoor
unit doesn't
match
LP
OFF 3S
and blink
19 times
OFF 3S
and blink
16 times
compressor and Outdoor
fan motor can’t work.
Indoor unit and outdoor unit
doesn't match.
43
Failure
start-up
LC
OFF 3S
and blink
11 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.
44
Malfunction
of phase
current
detection
circuit for
compressor
U1
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.
Replace outdoor control panel
AP1.
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