Vivax ACP-18COFM50AECI, Service Manual, Page: 37 / 64

10. Troubleshooting
10.1
Indoor unit error code explanation:
PREMIER OASIS 9A R 12F Aurora series:
Display Operation lamp flash times Timer lamp Failure
E0 1 X Indoor EEPROM malfunction
E1 2 X Indoor / outdoor units communication error
E3 4 X Indoor fan speed has been out of control
E4 5 X Open or short circuit of T1 temperature sensor
E5 6 X Open or short circuit of T2 temperature sensor
F1 2 O Open or short circuit of T4 temperature sensor
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 parameter error
F5 6 O Outdoor fan speed out of control
F6 7 O Open or short circuit of T2B temperature sensor
P0 1 ☆ IPM module protection
P1 2 ☆ Voltage protection
P4 5
☆
Inverter compressor drive protection
P5 6 ☆ Mode conflict
P6 7 ☆
Low pressure protection(Just matching with
M4OA-36HFN1-Q,M4OD-28HFN1-Q,M5OC-36HF
N1-Q,
M5OD-42HFN1-Q)
O （ light ） X （ off ） ☆ （ flash ）
Light Commercial series(Except Console)
NO. MALFUNCTION RUN Timer DEF Alarm
DISPLAY
DIGITAL TUBE
1
Open or short circuit of T1 temperature sensor
☆
X X X
E0
2
Open or short circuit of T2 temperature sensor X X
☆
X
E1
3
Indoor / outdoor units communication error X
☆
X X
E2
4 Full-water malfunction X X X
☆
E3
5
Indoor EEPROM malfunction
☆ ☆
X X
E4
6
IPM module protection
☆
X X O
E5
7
Open or short circuit of T3 or T4 temperature sensor or
Outdoor EEPROM malfunction
☆
O X X E6
8
Outdoor fan speed has been out of control
☆
O
☆
X
E7
9
Indoor fan speed has been out of control
☆
O O X
F5
10
Voltage protection
☆
O X O
P0
11
Outdoor unit over-current protection
☆ ☆ ☆
X
P2
12
Inverter compressor drive protection
☆ ◎
X X
P4
13
Mode conflict
☆
X O O
P5
☆
Flash(at 2.5Hz)
◎
Flash(at 0.5Hz) O light X
（
off
）
Note: Digital display is only available for A5 duct type.