![background image](http://html.mh-extra.com/html/carrier/38qus018ds2-series/38qus018ds2-series_service-manual_2560810057.webp)
57
/
78
12.Troubleshooting
12.1 Indoor unit error code explanation:
HIWALL (42QHF009DS,
42QHF012DS,
42QHF018DS)
Display
Operation lamp flash times
Timer lamp
Failure
E0
1
X
Indoor EEPROM malfunction
E1
2
X
Indoor / outdoor units communication error
E3
4
X
Indoor fan speed has been out of control
E4
5
X
Open or short circuit of T1 temperature sensor
E5
6
X
Open or short circuit of T2 temperature sensor
F1
2
O
Open or short circuit of T4 temperature sensor
F2
3
O
Open or short circuit of T3 temperature sensor
F3
4
O
Open or short circuit of T5 temperature sensor
F4
5
O
Outdoor EEPROM parameter error
F5
6
O
Outdoor fan speed out of control
F6
7
O
Open or short circuit of T2B temperature sensor
P0
1
☆
IPM module protection
P1
2
☆
Voltage protection
P4
5
☆
Inverter compressor drive protection
P5
6
☆
Mode conflict
P6
7
☆
Low
pressure
protection(Just matching
with
38QUS036DS4)
O
(
light
)
X
(
off
)
☆
(
flash
)
Light Commercial series (Cassette/Duct)
NO.
MALFUNCTION
RUN
Timer
DEF
Alarm
DISPLAY
DIGITAL TUBE
1
Open or short circuit of T1 temperature sensor
☆
X
X
X
E0
2
Open or short circuit of T2 temperature sensor
X
X
☆
X
E1
3
Indoor / outdoor units communication error
X
☆
X
X
E2
4
Full-water malfunction
X
X
X
☆
E3
5
Indoor EEPROM malfunction
☆
☆
X
X
E4
6
IPM module protection
☆
X
X
O
E5
7
Open or short circuit of T3 or T4 temperature sensor or
Outdoor EEPROM malfunction
☆
O
X
X
E6
8
Outdoor fan speed has been out of control
☆
O
☆
X
E7
9
Indoor fan speed has been out of control
☆
O
O
X
F5
10
Voltage protection
☆
O
X
O
P0
11
Outdoor unit over-current protection
☆
☆
☆
X
P2
12
Inverter compressor drive protection
☆
◎
X
X
P4
13
Mode conflict
☆
X
O
O
P5
☆
Flash(at 2.5Hz)
◎
Flash(at 0.5Hz) O light X
(
off
)
Note: Digital display is only available for duct type.
Console series:
Operation
Timer
De-frost
LED STATUS
★
X
X
Open or short circuit of T1 temperature sensor
X
X
★
Open or short circuit of T2 temperature sensor
Summary of Contents for 38QUS018DS2 Series
Page 16: ...16 78 3 4 A5 Duct ...
Page 19: ...19 78 ...
Page 20: ...20 78 5 Wiring Diagram Outdoor 38QUS018DS2 Outdoor 38QUS027DS3 ...
Page 21: ...21 78 Outdoor 38QUS036DS4 High wall 42QHF009DS 42QHF012DS 42QHF018DS ...
Page 22: ...22 78 A5 Duct 42QSM009DS A5 Duct 42QSM012DS 42QSM018DS ...
Page 23: ...23 78 Four way cassette 42QTD009DS Four way cassette 42QTD012DS 42QTD018DS ...
Page 24: ...24 78 Console ...