Outdoor Unit Error Display Codes - Pioneer YN020GMFI22M2D Service Manual

8.3.2 Outdoor unit's digital display LED will display the following information except in the checking
mode as described above:

In standby , the LED displays "- -"

During the compressor is operating, the LED display the running frequency,

In defrosting mode, The LED displays "dF" or alternatively displays between running frequency
and "dF" (each displays 0.5s)

During compressor pre-heating, The LED displays "PH" or alternatively displays between
running frequency and "PH" (each displays 0.5s)

During the oil return process, The LED displays "RO" or alternatively displays between running
frequency and "RO" (each displays 0.5s)

In low ambient cooling mode, the LED displays "LC" or alternatively displays between running
frequency and "LC" (each displays 0.5s)

In forced cooling mode, the LED displays "FC" or alternatively displays between running
frequency and "FC"(each displays 0.5s)

When PFC module protection occurs three times within 15 minutes, the LED displays "E6" or
alternatively displays between running frequency and "E6" (each displays 0.5s)

In case of protection or malfunction, the LED displays error code or protection code.

8.3.3 Outdoor unit error display codes

Display
E0 Outdoor unit EEPROM parameter error
E2 Communication malfunction between indoor and outdoor units
Communication malfunction between IPM board and outdoor main control
E3
board
Outdoor temperature sensor (coil sensor T3,ambient sensor T4, Compressor
E4
discharge sensor T5、indoor coil outlet pipe sensor T2B) malfunction
E5 Over-voltage or under-voltage protection
E6 PFC module protection
E8 Outdoor fan speed malfunction
F1 No. A Indoor unit coil outlet temp. sensor malfunction
F2 No. B Indoor unit coil outlet temp. sensor malfunction
F3 No. C Indoor unit coil outlet temp. sensor malfunction
F4 No. D Indoor unit coil outlet temp. sensor malfunction
F5 No. E Indoor unit coil outlet temp. sensor malfunction
F6 No. F Indoor unit coil outlet temp. sensor malfunction
P1 High pressure protection
P2 Low pressure protection
P3 Current overload protection
P4 Temperature protection of compressor discharge
P5 Condenser high temperature protection
P6 Inverter module (IPM) malfunction
LP Low ambient temperature protection
LED STATUS New indoor Error
F4
E1
——
F2/F1/F3/F6
P1
——
F5
——
——
——
——
——
——
P6
P6
F0
——
——
P0
——