Daikin LXE10E-A Service Manual page 146

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Symptom
Indicator flashes Refrigerant
when the RS is shortage
-10˚C or less Blocked pipe (parts)
during frozen (including solenoid
operation valves)
Trap of air in
refrigerant system
The high Faulty discharge
pressure is pressure control
excessively valve DPR
high
The low Faulty liquid
pressure is solenoid valve LSV
excessively low
Blocked dryer
The low Entering of air
pressure is
excessively
high
Frosted Faulty high
compressor pressure transducer
body or suction HPT
pipe
Cause
Gas leak check
Is the difference in pressure
between the ports w and t 1000 kPa
Is the difference in pressure
between the ports t and e 100 kPa
Is the difference in
temperature of the pipe in front of
and that back of dryer filter 5˚C
Check for
entering of air referring
to clause 4.1.4 (2)
Is the difference in pressure
between the pressure gauge and
HPT 100 kPa or more?
Gas shortage⇒Replace the refrigerant
6-4
Checkpoint
YES
Gas leaks⇒Restore the gas leaking portion
NO
YES
Clogged section between the ports
or DRP operation is faulty⇒Replace the DPR
or more?
NO
YES
Blocked section between the ports
or blocked LSV⇒Replace the LSV
or more?
NO
YES
Check for clog in a dryer⇒Replace the dryer
or more?
NO
YES
Air is entering⇒Replace refrigerant
NO
YES
Faulty HPT⇒Replace the HPT
NO
Remedy
w t
and
t e
and
Note: Recover refrigerant when
replacing it