Daikin LXE10E-A - Page 149

6-7
Symptom Checkpoint RemedyCause
The low
pressure is
excessively low
Solenoid valve
internal leak(BSV,
DSV, HSV)
Solenoid valve
internal leak(ISV)
Is pull-down possible?
NO
YES
Restore the electronic expansion valve
(see the pictures below)
(1) Apply Lock-tight sealant to the threads
(2) Apply Lock-tight sealant to the metal touch section
(3) Apply silicone sealant to the flare nut
(4) Fix the cable at two positions
Replace the valve
Replace the dryer
Remove the electronic expansion
valve coil
↓
Blow air into the electronic expansion
valve and heat the valve by a dryer
Continue from previous page
Faulty compression
by compressor
Replace the compressor
Leak from solenoid valve
⇒Replace
Is pull-down possible?
Finish
Normal operation
Is HSV, DSV, BSV
outlet pipe hot?
Is the ISV
outlet pipe hot?
Circuit breaker OFF→ON
Leak from solenoid valve
⇒Replace
*HSV: Hot gas solenoid valve
DSV: Defrost solenoid valve
BSV: Discharge gas bypass solenoid valve
*ISV: Injection solenoid valve
YES (Hot)
YES (Hot)
YES
NO (Cold)
NO (Cold)
NO
The low
pressure is
excessively
high
Blow air onto here
Heat here by
a hair dryer
Lock-tight
(2) Metal touch
(1) Threads
(4) Tie wrap
(3) Silicone sealant
Ⅲ Inside temperature does not drop
06LXE10E-A(1-27)09.3.419:38ページ6-7
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