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1
CCM-180A/WS
201803
43
CCM
-1
8
0
A/
W
S
Ser
vice M
anual
xL5
Zero speed protection
xL7
Phase sequence error
xL8
The compressor frequency variation is greater than 15 Hz within one
second of protection
xL9
The actual compressor frequency differs from the target frequency by
more than 15 Hz protection
yHD
Slave unit malfunction
Note:
1. 'x' is a placeholder for the compressor system (compressor and related electrical components), with 1 representing compressor system A and 2
representing compressor system B.
2. For some error codes, a manual restart is required before the system can resume normal operations.
3. Once the EEV is connected properly, a manual restart is required before the system can resume normal operations.
Table 16 Error codes for IDUs
Error code
Content
FE
Indoor unit has not been assigned an address
Ed
Outdoor unit error
EE
Water level error
E0
Mode conflict
Eb
EEV error
E1
Communication error between indoor and outdoor units
E2
Indoor ambient temperature sensor error
E3
Indoor heat exchanger mid-point temperature sensor error
E4
Indoor heat exchanger outlet temperature sensor error
E6
Fan error
E7
EEPROM mismatch