Daikin LX10F10A, Руководство по обслуживанию

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2.7 General Diagnosis
If the unit does not work properly, refer to the following table to find causes of trouble and provide
appropriate measures.
Symptom Cause Checkpoint Remedy
Ⅰ
Unit does not oper
ate
A. Neither evaporator
fan, condenser fan
nor compressor runs.
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
Failure in running of
condenser fan Ensure that the condenser fan is stopped while
high pressure is under control.
Does the condenser fan operate low speed at
over 800kPa and high speed at over 1000kPa?) It is normal if it operates
low speed at over 800kPa
and high speed at over
1000kPa.
Megger 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 object models
shown in paragraph 1.2. Replace the Fu.
Replace faulty device.
Check for disconnection on secondary
side of transformer (Tr)
Check if there is 24V between No.3 and
4 pin of connector X30A (I/O board). Replace the transformer.
B. Evaporator fan runs,
but condenser fan and
compressor do not run.
Not malfunction
(thermostat-OFF
status) Display of controller (Presence of
ALARM display) See the alarm code
when ALARM is issued
C. Evaporator fan and
compressor run,
but condenser fan
does not run.
Not malfunction (under
high pressure control) Check of operation of HPT (E101) by
controller display Refer to paragraph 2.6.
Depend on alarm diagnosis No.001
External factor Visual check for foreign matters
caught in and deformation (including
relevant parts such as controllers) Remove foreign matters
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 for foreign matters caught in
and deformation (including relevant parts
such as controllers) Remove foreign matters.
E. Compressor runs,
but evaporator fan
and condenser fan
do not run.
Not malfunction
(defrost) Is "DEFROST" indicated on LCD
panel?
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