user manual

898841-UIM-B-0113
32 Johnson Controls Unitary Products
INDOOR UNIT ERROR CODES
TABLE 12: Error Codes - 09K 12K
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
1
High
pressure
protection of
system
E1
OFF 3s
and blink
once
During cooling and drying
operation, except indoor
fan operates, all loads
stop operation. During
heating operation, the
complete unit stops.
Possible reasons:
1. Refrigerant was super abun-
dant;
2. Poor heat exchange (includ-
ing filth blockage of heat
exchanger and bad radiating
environment); Ambient tempera-
ture is too high.
2
Antifreezing
protection
E2
OFF 3S
and blink
twice
OFF 3S
and blink
3 times
During cooling and drying
operation, compressor
and outdoor fan stop while
indoor fan operates.
1. Poor air-return in indoor unit;
2. Fan speed is abnormal;
3. Evaporator is dirty.
3
System block
or refrigerant
leakage
E3
OFF 3S
and blink
3 times
OFF3S
and blink
9 times
The Dual-8 Code Display
will show E3 until the low
pressure switch stop
operation.
1.Low-pressure protection
2.Low-pressure protection of
system
3.Low-pressure protection of
compressor.
4
High
discharge
temperature
protection of
compressor
E4
OFF 3S
and blink
4 times
OFF 3S
and blink
7 times
During cooling and drying
operation, compressor
and outdoor fan stop while
indoor fan operates.
During heating operation,
all loads stop.
Please refer to the Proficien-
TECH Ductless Splits Technical
Training Manual (discharge pro-
tection, overload).
5
Overcurrent
protection
E5
OFF 3S
and blink
5 times
OFF 3S
and blink
5 times
During cooling and drying
operation, compressor
and outdoor fan stop while
indoor fan operates.
During heating operation,
all loads stop.
1. Supply voltage is unstable;
2. Supply voltage is too low and
load is too high;
3. Evaporator is dirty.
6
Communi-
cation
Malfunction
E6
OFF 3S
and blink
6 times
OFF
During cooling operation,
compressor stops while
indoor fan motor operates.
During heating operation,
the complete unit stops.
Refer to the corresponding
ProficienTECH Ductless Splits
Technical Training Manual.
7
High
temperature
resistant
protection
E8
OFF 3S
and blink
8 times
OFF 3S
and blink
6 times
During cooling operation:
compressor will stop while
indoor fan will operate.
During heating operation,
the complete unit stops.
Refer to the malfunction
analysis (overload, high
temperature resistant).
8
EEPROM
malfunction
EE
OFF 3S
and blink
15 times
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.
Replace outdoor control panel
AP1.
9
Limit/
decrease
frequency
due to high
temperature
of module
EU
OFF 3S
and blink
6 times
OFF 3S
and blink
6 times
All loads operate normally,
while operation frequency
for compressor is
decreased
Discharging 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.
10
Malfunction
protection of
jumper cap
C5
OFF 3S
and blink
15 times
Wireless remote receiver
and button are effective,
but cannot dispose the
related command.
1. No jumper cap insert on
mainboard.
2. Incorrect insert of jumper cap.
3. Jumper cap damaged.
4. Abnormal detecting circuit of
mainboard.
11
Gathering
refrigerant
F0
OFF 3S
and blink
1 times
OFF 3S
and blink
1 times
When the outdoor unit
receive signal of Gather-
ing refrigerant, the system
will be forced to run under
cooling mode for gathering
refrigerant
Nominal cooling mode