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38MGRBQ: Service Manual
Outdoor Unit Digital Codes
DISPLAY
Outdoor unit EEPROM parameter error
E0
Communication malfunction between indoor and outdoor units
E2
E3
Communication malfunction between IPM board and outdoor main control board
Outdoor temperature sensor (coil sensor T3,ambient sensor T4, Compressor discharge sensor T5、indoor coil outlet
E4
pipe sensor T2B) malfunction
Over-voltage or under-voltage protection
E5
PFC module protection
E6
E8
Outdoor fan speed malfunction
F1
No. A Indoor unit coil outlet temp. sensor malfunction
No. B Indoor unit coil outlet temp. sensor malfunction
F2
No. C Indoor unit coil outlet temp. sensor malfunction
F3
No. D Indoor unit coil outlet temp. sensor malfunction
F4
F5
No. E Indoor unit coil outlet temp. sensor malfunction
No. F Indoor unit coil outlet temp. sensor malfunction
F6
High temperature protection of compressor top
P0
High pressure protection
P1
Low pressure protection
P2
P3
Current overload protection
Temperature protection of compressor discharge
P4
Condenser high temperature protection
P5
Inverter module (IPM) malfunction
P6
LP
Low ambient temperature protection
Communication malfunction between inverter board and outdoor main control board (only for M5OG-48HFN1-M-[X])
Ed
38MGHBQ48EA3
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Table 27 — Outdoor Unit Digital Codes
LED STATUS
32
NEW INDOOR
ERROR
F4
E1
——
F2/F1/F3/F6
P1
——
F5
——
——
——
——
——
——
P2
P6
P6
F0
——
——
P0
——
——
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