![background image](http://html.mh-extra.com/html/carrier/38qus018ds2-series/38qus018ds2-series_service-manual_2560810058.webp)
58
/
78
X
★
X
Indoor / outdoor units communication error
★
★
X
Indoor EEPROM malfunction
★
X
★
IPM module protection
★
★
★
Open or short circuit of T3 or T4 temperature sensor
★
★
Outdoor unit voltage protection
★
Outdoor unit over-current protection
★
X
Top temperature protection of compressor
★
◎
X
Inverter compressor drive protection
★
X
Mode conflict
★
★
Indoor fan speed has been out of control
X
★
Outdoor fan malfunction
★
flash at 5Hz,
light,
◎
flash at 0.5Hz, X extinguished
12.2 Outdoor unit error code explanation:
Display
LED STATUS
E0
Outdoor EEPROM malfunction
E2
Indoor / outdoor units communication error
E3
Communication malfunction between IPM board and outdoor main board
E4
Open or short circuit of outdoor unit temperature sensor
E5
Voltage protection
E8
Outdoor fan speed has been out of control
F1
No A Indoor unit coil outlet temperature sensor or connector of sensor is defective
F2
No B Indoor unit coil outlet temperature sensor or connector of sensor is defective
F3
No C Indoor unit coil outlet temperature sensor or connector of sensor is defective
F4
No D Indoor unit coil outlet temperature sensor or connector of sensor is defective
F5
No E Indoor unit coil outlet temperature sensor or connector of sensor is defective
P1
High pressure protection (For 38QUS036DS4)
P2
Low pressure protection (For 38QUS036DS4)
P3
Current protection of compressor
P4
Temperature protection of compressor discharge
P5
High temperature protection of condenser
P6
IPM module protection
Note: Once these error codes display, they will disappear in at least 30 seconds if the unit come back to
normal.(Except E3&E4)
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 ...