Midea M2OC-18HFN1-M Service Manual page 39

9.3.3 Outdoor unit error display
Display
E0 Outdoor EEPROM malfunction
E2 Communication malfunction between indoor and outdoor units
Communication malfunction between IPM board and outdoor main
E3
board
Open or short circuit of outdoor temperature sensor(T3、T4、TP、
E4
T2B)
E5 Voltage protection
E6 PFC module protection(Only for M4OC-36HRFN1-M)
Outdoor fan speed has been out of control(Only for DC fan motor
E8
models)
No A Indoor unit coil outlet temp. sensor or connector of sensor is
F1
defective
No B Indoor unit coil outlet temp. sensor or connector of sensor is
F2
defective
No C Indoor unit coil outlet temp. sensor or connector of sensor is
F3
defective
No D Indoor unit coil outlet temp. sensor or connector of sensor is
F4
defective
Temperature protection of compressor top (Only for M3OD-27HRDN1-
P0
M)
P1 High pressure protection (Only for M4OC-36HRFN1-M)
P2 Low pressure protection(Only for M4OC-36HRFN1-M)
P3 Current protection of compressor
P4 Temperature protection of compressor discharge
P5 High temperature protection of condenser
P6 IPM module protection
LED STATUS
IDU IDU
Error Error
(MTBI(MTBU))
(Vertu/Luna) (Oasis)
E5 F4
E1 E1
—— ——
E5 F2
P1 P1
——
——
F5
——
—— ——
—— ——
—— ——
—— ——
P2 P2
—— ——
—— ——
—— ——
—— ——
—— ——
P0 P0
IDU
Error
E6
E2
——
E6
P0
——
——
——
——
——
——
P3(P1)
——
——
——(P2)
——
——
E5