Daikin LXE10E-A - Page 148

6-6
Symptom Checkpoint RemedyCause
The low
pressure is
excessively low
Faulty opening of
electronic
expansion valve
(EV)
Faulty opening of
suction modulsting
valve (SMV)
Low air volume
(frosted evaporator)
Low air volume
(reverse rotation of
evaporator fan)
Low air volume
(stop of evaporator
fan)
Low air volume
(drop of propeller
fan)
Displacement of discharge
pipe temperature sensor
DCHS (detection of
humidity)
Ⅲ Inside temperature does not drop
NO
Normal
Normal
Normal
NO
Is drawn
and discharged
air reversed when
the ventilator
is opened?
Is the DCHS sensor
installed inappropriately?
Faulty
resistance of
electronic expansion
valve coil
(150Ω phase)
YES(Inappropriate)
NO(Correct)
Correct installation of sensor
YES(Inappropriate)
Replace the electronic expansion valve coil
Reset opening of EV, SMV
(Circuit breaker ON)
Is pull-down possible?
Is pull-down possible?
NO(Fan rotates normally)
Check the wiring of magnetic
contactor for evaporator fan
YES(Fan rotates reverse)
Is the current at
evaporator fan motor 0?
(on the secondary side of
magnetic contactor)
Replace the fan motor
Install the propeller fan
Is pull-down possible?
NO(Normal)
NO
Continue to next page
YES
Open the access
panel and check if
the evaporator fan
blade is removed
YES
YES
YES
YES
Manual defrost
NO
NO
NO
* See page 7-1 (type A) or
page 7-2 of TR03-1A (type E-1).
Faulty electronic
expansion valve coil
Ingress of water in
refrigerant system
Water choke
06LXE10E-A(1-27)07.2.233:11PMページ6-6
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