Midea air conditioner Troubleshooting

The Midea company is one of the largest producers and exporters of air conditioners in the world. The range of Midea includes household systems of types Split and Multi Split, commercial and industrial air conditioners, central conditioning systems. They all possess Midea air conditioner troubleshooting system.

Midea air conditioner Indoor unit error code explanation

Glory series

NO.MALFUNCTIONDEFTIMERAUTORUN
1Indoor EEPROM malfunctionoooo
2Indoor / outdoor units communication error****
3Zero-crossing signal erroroo**
4Indoor fan speed has been out of controloo**
5Open circuit or short circuit of outdoor temperature sensorxox*
6Open circuit or short circuit of T1 or T2 temperature sensorooo*
8IPM module protection or IGBT over-strong current protectionxxo*
9Over voltage or too low voltage protectionxoo*
10Temperature protection of compressor topoxx*
11Inverter compressor drive protectionox**
12Mode conflictxo**

*Flash (at 0.5Hz, Mode conflict at 0.25Hz)  O light  X(off)

9V series+VERTU series+9A series+Corona series+ R series+Y series+ X series

DisplayLED STATUS
E0Indoor EEPROM malfunction
E1Indoor/ outdoor units communication error
E2Zero-crossing signal error
E3Indoor fan speed has been out of control
E5Open circuit or short circuit of outdoor temperature sensor
E6Open circuit or short circuit of T1 or T2 temperature sensor
P0IPM module protection or IGBT over-strong current protection
P1Over voltage or too low voltage protection
P2Temperature protection of compressor top
P4Inverter compressor drive protection
P5Mode conflict

NEOLA series +PREMIER series +OASIS series

DisplayOperation lamp flash times Timer lampFailure
E01xIndoor EEPROM malfunction
E12xIndoor / outdoor units communication error
E23xZero-crossing signal error
E34xIndoor fan speed has been out of control
E45xOpen or short circuit of T1 temperature sensor
E56xOpen or short circuit of T2 temperature sensor
F12oOpen or short circuit of T4 temperature sensor
F23oOpen or short circuit of T3 temperature sensor
F34oOpen or short circuit of T5 temperature sensor
F45oOutdoor EEPROM malfunction
F67oOpen or short circuit of T2B temperature sensor
P01*IPM module protection or IGBT over-strong current
protection
P12*Over voltage or too low voltage protection
P23*Temperature protection of compressor top
P45*Inverter compressor drive protection
P56*Mode conflict

o  (light)   X   (off)  * (flash)

Cassette series

OperationTimerDe-frostAlarmLED STATUS
*xxxOpen or short circuit of T1 temperature sensor
xx*xOpen or short circuit of T2 temperature sensor
x*xxIndoor / outdoor units communication error
xxx*Full-water malfunction
**xxIndoor EEPROM malfunction
*xxoIPM module protection
*oxxOpen or short circuit of T3 or T4 temperature sensor
*oxoOutdoor voltage protection
****Temperature protection of compressor top
*xooMode conflict
*ooxInverter compressor drive protection

*  flash, o light, X extinguished

Ceiling &Floor series

OperationTimerDe-frostAlarmLED STATUS
*xxxOpen or short circuit of T1 temperature sensor
xx*xOpen or short circuit of T2 temperature sensor
x*xxIndoor / outdoor units communication error
xxx*Full-water malfunction
**xxIndoor EEPROM malfunction
*xxoIPM module protection
*oxxOpen or short circuit of T3 or T4 temperature sensor
*oxoOutdoor voltage protection
*xoxTemperature protection of compressor top
*xooMode conflict

*  flash, o light, X extinguished

A5 Duct series

OperationTimerDe-frostAlarmLED STATUSDISPLAY DIGITAL TUBE
*xxxOpen or short circuit of T1 temperature sensorE0
xx*xOpen or short circuit of T2 temperature sensorE1
x*xxIndoor / outdoor units communication errorE2
xxx*Full-water malfunctionE3
**xxIndoor EEPROM malfunctionE4
*xxoIPM module protectionE5
*oxxOpen or short circuit of T3 or T4 temperature
sensor
E6
*oxoOutdoor voltage protectionP0
****Temperature protection of compressor topP3
*()xxInverter compressor drive protectionP4
*xoxMode conflictP5

*  flash at 5Hz, o light, X extinguished () flash at 0.5Hz

Console series

OperationTimerDe-frostLED STATUS
*xxOpen or short circuit of T1 temperature sensor
xx*Open or short circuit of T2 temperature sensor
x*xIndoor / outdoor units communication error
**xIndoor EEPROM malfunction
*x*IPM module protection
***Open or short circuit of T3 or T4 temperature sensor
*oxTop temperature protection of compressor
*()xInverter compressor drive protection
*xoMode conflict
*o*Indoor fan speed has been out of control

*  flash at 5Hz, o light, X extinguished

For M5OA-36HRDN1-Q model

DisplayLED STATUS
E0Outdoor EEPROM malfunction
E2Indoor / outdoor units communication error
E3Communication malfunction between IPM board and outdoor main board
E4Open or short circuit of outdoor unit temperature sensor
E5Compressor voltage protection
E6PFC module protection
P0Temperature protection of compressor discharge or compressor top.
For M4OC-27HRDN1, M4OC1-27HRDN1-Q,M4OC-36HRDN1-Q,it only means Temperature protection of compressor discharge
P1High pressure protection
P2Low pressure protection
P3Current protection of compressor
P4Temperature protection of compressor discharge
P5High temperature protection of condenser
P6IPM module protection
F1No A Indoor unit coil outlet temp. sensor or connector of sensor is defective
F2No B Indoor unit coil outlet temp. sensor or connector of sensor is defective
F3No C Indoor unit coil outlet temp. sensor or connector of sensor is defective
F4No D Indoor unit coil outlet temp. sensor or connector of sensor is defective
F5No E Indoor unit coil outlet temp. sensor or connector of sensor is defective