Midea M2OC-18HFN1-M Service Manual page 34

For MCA2I-12HRDN1-M, MCA2I-18HRDN1-M, MUBI-12HRDN1-M, MUBI-18HRDN1-M:
Operation Timer
★
X
X X
★
X
X X
★ ★
★
X

★

★
★ ★
★
X

★
★ flash (For cassette, flash at 5Hz)(for ceiling&floor, flash 2.5Hz),  light, X extinguished,
For MTBI-12HWDN1-M, MTBI-18HWDN1-M:
Operation Timer De-frost
★
X
X X
★
X
X X
★ ★
★
X
★ 
★ 

★
★ ★
★ ◎
★
X
De-frost Alarm
X X
★
X
X X
★
X
X X

X
X X

X
★ ★
 

X
Alarm
X X Open or short circuit of T1 temperature sensor
★
X Open or short circuit of T2 temperature sensor
Communication malfunction between indoor and
X X
outdoor units
★
X Full-water malfunction
X X Indoor EEPROM malfunction

X IPM module protection
Open or short circuit of T3 or T4 temperature
X X
sensor or outdoor EEPROM malfunction
★
X Outdoor fan has been out of control

X Voltage protection
★ ★
Temperature protection of compressor top.
X X Inverter compressor drive protection

X Mode conflict
★ flash at 2.5Hz,  light, X extinguished ◎flash at 1Hz
Open or short circuit of T1 temperature sensor
Open or short circuit of T2 temperature sensor
Communication malfunction between indoor and outdoor units
Full-water malfunction
Indoor EEPROM malfunction
IPM module protection
Open or short circuit of T3 or T4 temperature sensor
Voltage protection
Temperature protection of compressor top.
Mode conflict
Inverter compressor drive protection
Failure
Failure
Display
E0
E1
E2
E3
E4
E5
E6
E7
P0
P3
P4
P5
ODU Error
code
——
——
E2
——
——
P6
E0,E4
E8
E5
P0
——
——