Daikin LX10F11B3 User Manual

2.7 General Diagnosis
If the unit does not work properly, refer to the following table for diagnosis to repair procedure and repair
action need.
Symptom Cause Checkpoint Remedy
Ⅰ
Unit does not operate
A. Compressor,
Evaporator fan,
Condenser fan
dose not run.
Faulty power
supply
Voltage on primary side of circuit breaker
It should be within the voltage range
shown in paragraph 1-1.
Check the power supply
Check the power supply plug
Check for disconnection of cable
Device malfunction Mega test check on secondary side
of magnetic contactor (Evaporator fan
motor, condenser fan motor, compressor)
Replace faulty device.
Controller Unit switch ON/OFF check Turn the switch ON.
Alarm presence (F code) See the instructions for
alarm code of controller
in paragraph 2.5.
Secondary side
of power supply
transformer
Check for disconnection of F2U (fuse)
Check for malfunction in components
shown in paragraph 1.2.
Replace Fuse.
Replace faulty device.
Check for disconnection on secondary
side of transformer (Tr)
Check if there is AC24V between No.3
and 4 pins of connector X30A (I/O board).
Replace the transformer.
B. Evaporator fan
runs, but condenser
fan and compressor
do not run.
Normal operation
(Cooling OFF
status)
Display of controller (ALARM display) See the alarm code
when ALARM is
generated
C. Evaporator
fan and
compressor
run, but
condenser fan
does not run.
Normal operation
<No action
needed>
・ Check of operation of HPT (E101)
by controller display
・
Check if the condenser fan has
stopped during high-pressure control.
(Check that the condenser fan
operates at low speed at over 800kPa
and at high speed at over 1000kPa.)
・ Refer to paragraph 2.6.
Depend on alarm
diagnosis
001
・ Normal if it operates at
low speed at over 800
kPa and at high speed
at over 1000 kPa.
External factor Visual check debris and damage
(including relevant parts such as
controllers)
repair as needed
D. Condenser
fan and
compressor
run, but
evaporator fan
does not run.
Faulty electrical system
of evaporator fan
・ CTP activation
・ Motor burnt out
(disconnection)
・ Disconnected coil of
magnetic contactor
・Motor coil resistance
・ Ensure that the magnetic contactor
is turned ON
・ Voltage on secondary side of
magnetic contactor (three-phase)
・Replace the fan motor
・ Replace the magnetic
contactor
External factor Visual check debris and damage
(including relevant parts such as
controllers)
repair as needed
E.
Compressor runs,
but evaporator fan
and condenser
fan do not run.
Normal operation
<No action
needed>
・ Does "DEFROST" display on the
LCD panel?
・ Is the Defrost LED (orange)
illuminated?
2-45
02章45-54LX10F11B3TR16-02En.indd2-4502章45-54LX10F11B3TR16-02En.indd2-45 2016/02/029:37:422016/02/029:37:42
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Daikin LX10F11B3 Specifications

General

Brand	Daikin
Model	LX10F11B3
Category	Inverter
Language	English