Symptom
Cause
Checkpoint
Remedy
Ⅰ
Unit does not oper
ate
F. Controller does
not turn on.
・
R or T-phase is
open.
・
Faulty power
supply (voltage
drop)
・
Disconnection of
power cable
・
Faulty power plug
・
Disconnection
of fuse F1U (I/O
board) circuit
Faulty transformer
YES
YES
Is the
voltage of three-
phase power supply on the
primary side of the circuit
breaker AC300V
or less?
Is the fuse F1U circuit
opened?
Is the voltage
at X30A (I/O board)
AC20V or less?
*
R or T-phase is open.
*
Faulty power supply (voltage drop)
*
Disconnection of power cable
*
Power plug failure
*
Replace fuse F1U
*
Check open circuit
NO
NO
NO
YES
Replace the transformer Tr1.
Replace I/O board.
Ⅱ
Unit oper
ates b
ut soon stops
.
A. Unit operates
but soon stops
(full stop).
Refer to the Alarm
code list.
───
───
B. Evaporator
fan runs, but
condenser fan
and compressor
stop soon.
Cooling OFF
(normal)
───
───
C. Compressor
runs, but
condenser fan
and evaporator
fan stop.
Defrost (normal)
───
───
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02̲45-54̲LX10F11B̲En.indd 2-46
02̲45-54̲LX10F11B̲En.indd 2-46
2014/11/19 16:36:58
2014/11/19 16:36:58
https://daikin-p.ru
Summary of Contents for LX10F11B
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