Midea M3OC-27HRDN1 - Page 25

F2
3 O Open or short circuit of T3 temperature sensor
F3 4 O Open or short circuit of T5 temperature sensor
F4 5 O Outdoor EEPROM malfunction
F6 7 O Open or short circuit of T2B temperature sensor
P0
1 ☆
IPM module protection or IGBT over-strong current
protection
P1 2
☆
Over voltage or too low voltage protection
P2 3
☆
Temperature protection of compressor top
P4 5
☆
Inverter compressor drive protection
P5 6
☆
Mode conflict
O （light） X （off） ☆ （flash）
Cassette series:
Operation Timer De-frost Alarm LED STATUS
★
X X X Open or short circuit of T1 temperature sensor
X X
★
X Open or short circuit of T2 temperature sensor
X
★
X X Indoor / outdoor units communication error
X X X
★
Full-water malfunction
★ ★
X X Indoor EEPROM malfunction
★
X X

IPM module protection
★

X X Open or short circuit of T3 or T4 temperature sensor
★

X

Outdoor voltage protection
★ ★ ★ ★
Temperature protection of compressor top
★
X
 
Mode conflict
★
 
X Inverter compressor drive protection
★ flash,  light, X extinguished.
Ceiling &Floor series:
Operation Timer De-frost Alarm LED STATUS
★
X X X Open or short circuit of T1 temperature sensor
X X
★
X Open or short circuit of T2 temperature sensor
X
★
X X Indoor / outdoor units communication error
X X X
★
Full-water malfunction
★ ★
X X Indoor EEPROM malfunction
★
X X

IPM module protection
★

X X Open or short circuit of T3 or T4 temperature sensor
★

X

Outdoor voltage protection
★
X

X Temperature protection of compressor top
★
X
 
Mode conflict
★ flash,  light, X extinguished.