30
TROUBLESHOOTING CONTINUED
38GVM Diagnostic Codes
18, 24, and 30K
36 and 42K
Indoor Unit
Display
Indoor and/or
Outdoor Unit
Error
NA Defrost Mode 1 08 Outdoor
NA Defrost Mode 2 0A Outdoor
Inlet tube temperature sensor malfunction Inlet tube temperature sensor malfunction SeeErrorCodeTable Indoor
Outlet tube temperature sensor malfunction Outlet tube temperature sensor malfunction SeeErrorCodeTable Indoor
Low charge or refrigeration system blockage NA F0 Outdoor
Indoor return air temperature sensor
malfunction
Indoor return air temperature sensor
malfunction
SeeErrorCodeTable Indoor
Indoor tube temperature sensor malfunction Indoor tube temperature sensor malfunction SeeErrorCodeTable Indoor
Outdoor ambient temperature sensor
malfunction
Outdoor ambient temperature sensor
malfunction
F3 Outdoor
NA
Outdoor mid---coil temperature sensor
malfunction
F4 Outdoor
Outdoor discharge air temperature sensor Outdoor discharge air temperature sensor F5 Outdoor
Cooling oil return cycle Cooling oil return cycle F7 Outdoor
System high pressure protection System high pressure protection E1 Outdoor
Indoor freeze protection Indoor freeze protection E2 Indoor
System low pressure protection System low pressure protection E3 Outdoor
Compressor discharge high temperature
protection
Compressor discharge high temperature
protection
E4 Outdoor
Communication error between indoor
and outdoor
Communication error between indoor
and outdoor
E6
Indoor and
outdoor
Mode conflict Mode conflict E7 Indoor
System overload protection System overload protection E8 Outdoor
Cold Blow Protection NA E9 Indoor
Test mode Te st m ode dd Outdoor
Pump down mode Pump down mode Fo Outdoor
IPM Rest IPM Rest P0 Outdoor
Compressor current protection Compressor current protection P5 Outdoor
NA
Communication error between the inverter
drive and main board
P6 Outdoor
Heat sink temperature sensor malfunction Heat sink temperature sensor malfunction P7 Outdoor
IPM over temperature protection IPM over temperature protection P8 Outdoor
NA Open Contactor P9 Outdoor
Current sensor malfunction Current sensor malfunction Pc Outdoor
NA Current sensor mis---wiring protection Pd Outdoor
Input current protection Input current protection PA Outdoor
NA
Inverter board ambient temperature sensor
malfunction
PF Outdoor
Low voltage protection Low voltage protection PL Outdoor
High voltage protection High voltage protection PH Outdoor
NA Abnormal input AC voltage PP Outdoor
Capacitor charging malfunction Capacitor charging malfunction PU Outdoor
Defrost or heating oil return cycle Heating oil return cycle H1 Outdoor
NA Forced defrost H1 Outdoor
Compressor overheat protection Compressor overheat protection H3 Outdoor
IPM Protection IPM Protection H5
Compressor speed reduction Compressor speed reduction H7 Outdoor
PFC board protection PFC board protection Hc Outdoor
Compressor high voltage protection NA L9 Outdoor
Compressor start---up failure Compressor start---up failure Lc Outdoor
Compressor phase loss protection Compressor phase loss protection Ld Outdoor
NA Compressor stalling LE Outdoor
NA Compressor over ---speed protection LF Outdoor
NA Condenser coil inlet temp sensor malfunction A5 Outdoor
NA
Condenser outlet temperature sensor
malfunction
A7 Outdoor
Memory card error NA EE Outdoor
Frequency limitation for module circuit
protection
NA En Outdoor
Frequency limitation for module temperature
protection
NA EU Outdoor
Frequency limitation for overload protection NA F6 Outdoor
Frequency limitation for system circuit
protection
NA F8 Outdoor
Frequency limitation for module circuit
protection
NA F9 Outdoor
Frequency limitation for freeze protection NA FH Outdoor
Compressor demagnetizing protection NA HE Outdoor
Indoor and outdoor units mismatch NA LP Outdoor and Indoor
Compressor phase detection malfunction NA U1 Outdoor
Low DC bus voltage NA U3 Outdoor
Communication error between main board
and EXV
Communication error between main board
and EXV
dn Outdoor
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