4
MALFUNCTION CODE OF OUTDOOR UNIT
4
Table 4-1
1. When stand by, LED displaying the amount of indoor units online which communicate with outdoor units.
2. When operation, LED displaying frequency value of compressor.
3. When defrost, LED displaying “dF”.
4. The power cord type designation is H07RN-F.
No.
Failure or Protection Type
Fault Code
1
2
3
4
5
6
7
High pressure sensor fault
T3 & T4 temperature sensor error
H0
H4
H5
H7
H8
E4
8
E5
9
10
11
DC fan motor error
E6
EH
E7
E6 protection appears 6 times in 1 hour
Eb
PL
HF
E2
12
13
14
15
16
17
18
19
20
21
22
Low pressure protection
Communication error between main board and
compressor drive board
DC bus voltage error
P1
P2
P3
P4
P5
23
24
Typhoon protection
Recovery Mode
Recoverable
Recoverable
Irrecoverable
Irrecoverable
Recoverable
Recoverable
Recoverable
Recoverable
Recoverable
Recoverable
Recoverable
Irrecoverable
Recoverable
Recoverable
Irrecoverable
Recoverable
Recoverable
Recoverable
Recoverable
Recoverable
Recoverable
Recoverable
P8
F1
E1
High pressure protection
M-HOME for the indoor and outdoor units does not match
Display Function Instruction
25
26
27
28
29
30
Recoverable
Recoverable
Recoverable
Recoverable
Recoverable
Recoverable
Recoverable
Recoverable
L0
L1
L2
L4
L5
L7
L8
L9
DC bus low voltage protection
DC bus high voltage protection
MCE error
Zero speed protection
Phase sequence protection
Inverter-module protection
Qty. of indoor units mismatching
Phase sequence error
Communication error between indoor and master unit
Abnormal power supply voltage
Discharge temperature sensor error
Compressor current protection
Discharge Temp. protection
High Temp. protection of condenser
Inverter module Temp. protection
Inverter compressor module error
Compressor frequency variation greater than 15Hz
within one second protection
Actual compressor frequency differs from target
frequency by more than 15Hz protection
TL sensor error
3 times of P2 protection in 30 minutes
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