2-21
●Inverter F Alarm
Diagnosis
Alarm
code
Alarm content Controller action
101 F528
E528 is generated 5 times. (Compressor does not operate at startup)
UNIT stops
102 F52E
E52E is generated 4 times. (Instantenious over current >51A±10% at startup.)
UNIT stops
102 F52F
E52F is generated 4 times. (Compressor current sensor failure at startup.)
UNIT stops
103 F536
E536 is generated 4 times. (Detect offset failure of current sensor at startup)
UNIT stops
103 F538
Inverter board failure(Microcomputer I/O port logic judgment failure at power ON)
UNIT stops
103 F53A
Inverter board failure (Compresor type setting failure when power is on.)
UNIT stops
103 F53B Inverter board failure (EEPROM fault when power is on.） UNIT stops
103 F53C E53C is gener
ated 4 times. (Capacitor charging failure in main
circuit at startup)
UNIT stops
101 F53D E53D is generated 4 times. (Compressor lock at startup) UNIT stops
●
Inverter E Alarm
Diagnosis
Alarm
code
Alarm content Controller action
101 E523 Compressor over current (>22.5A) is detected during operation.
Restart after 3 min.
101 E524 Compressor over current (>50A) is detected during operation.
Restart after 3 min.
101 E525 Actual frequency much lower than command frequency due to
compressor over load
Restart after 3 min.
104 E526
Actual frequency much higher than command frequency due to
lightning or other external factors
Restart after 3 min.
101 E528 Compressor does not operate after startup.
Restart after 3 min.
105 E52C Fin temperature higher than 90 ℃
Restart after 3 min.
102 E52D Fin thermister abnormal (> 175 ℃ or < -45 ℃ is detected.)
Restart after 3 min.
102 E52E Large instantaneous over current at startup (> 51A)
Restart after 3 min.
102 E52F Compressor current sensor failure at startup
Restart after 3 min.
106 E531
Ripple voltage exceeds 35V due to poor power supply environment.
Restart after 3 min.
107 E532
DC voltage is below 290V or over 790V or voltage sensor is below 50V.
Restart after 3 min.
108 E533 DC voltage is below 200V or over 740V at startup.
Restart after 3 min.
One of R, S or T phase missing at starting
103 E536 Current sensor offset fault at startup
Restart after 3 min.
103 E53C Capacitor charge failure at startup
Restart after 3 min.
101 E53D Compressor lock at startup
Restart after 3 min.
109 E542 Cooling fan lock during operation
Alarm display only
110 E5FF Communication fault between CPU board and INV board
Restart after 3 min.
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