Daikin LX10F11B3 User Manual

2-40
Inverter Alarm Diagnosis
Inverter board and detection point of operating condition
Inverter Board (EC8)
Compressor
C58 C67 C66
R77
Main circuit capacitor
IPM power module
C601
C602
X4A
X6A
INVERTER
CPU
AC⇒DC rectification
PS
HPS
Q1
C57 C33 C32
P2
P1
Q1
L1
L2
L3
X801A
X802A
K1M
K2M
Communication
line to CPU board
IPM fin
temperature
detection
Detection point of operating condition
Power supply environment detection
(current/voltage/waveform)
Capacitor charge status
Actual frequency detection
(Compressor rotation speed)
Compressor current detection
CM
I/O CPU
101 F528 ・ F53D
E105 ・ E523 ・ E524 ・ E525 ・ E528 ・ E53D
Alarm
Logic
&
Possible
Causes
Alarm Logic Possible Causes
E105 : Compressor current is too high at starting
（≧DC51A）
① Over-current due to compressor overload
②Compressor lock
③
Inverter board failure（Current detection part）
E523： Compressor overload during operation
（≧DC16.1A）
E524： Compressor overload during operation
（≧DC19A）
① Over-current due to compressor overload
③
Inverter board failure（Current detection part）
E525： Compressor speed is down (detection of
stepping out) because actual frequency
is low against command frequency to
compressor
① Speed down due to compressor overload
③ Inverter board failure (Frequency
detection part)
E528：Compressor is not started
F528：E528 is generated 5 times.
②Compressor is lock at starting.
③ Inverter board failure (detection part of
wave form)
E53D：
Compressor does not operate during operation.
F53D：E53D is generated 4 times.
② Compressor is lock during operation
③ Inverter board failure (detection part of lock)
Trouble
Shooting
Step 1. Check the compressor
1-1. Check insulation and resistance of the compressor motor.
1-2. Check sound of compressor at starting.
Replace compressor if insulation, resistance is abnormal or noise is created at staring.
Step 2. Replace Inverter board if compressor sound is normal or does not start.
Controller
Action
F528 ・ F53D Unit stop
E105 ・E523 ・ E524 ・ E525 Restart after 3 minutes
E528 ・ E53D Restart after 3 minutes (Retry 5 times, F528, F53D is generated
at 4 times.）
02章19-44LX10F11B3TR16-02En.indd2-4002章19-44LX10F11B3TR16-02En.indd2-40 2016/02/0217:17:422016/02/0217:17:42
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Daikin LX10F11B3 Specifications

General

Brand	Daikin
Model	LX10F11B3
Category	Inverter
Language	English