Daikin LX10F11B Service Manual page 75

https://daikin-p.ru
Symptom
Sight glass flashes Refrigerant shortage
when the RS is 0℃ System blockage
or less during frozen (including solenoid
operation. valves)
Entering of air in
refrigerant system
The high pressure is Clogging of discharge
excessively high. pipe line
(Compressor to
condenser)
The low pressure is LSV failure
excessively low.
Blocked at dryer
The low pressure is Entering of air
excessively high.
Frosted compressor HPT failure
body or suction pipe
Cause
in pressure between the ports
② and ④ 1000 kPa
in pressure between the ports
temperature of the pipe in
and out of dryer filter
Check for entering of air
referring to paragraph 4.4.
difference in pressure
between the pressure gauge
and HPT 100 kPa
2-47
Checkpoint
YES
Gas leak check
Gas leaks
⇒ Repair the gas leaking location.
NO
YES
Is the difference
Clogging of discharge pipe line
Clogged section between the ports
② and ④
or more?
⇒ Repair as needed
NO
YES
Is the difference
Blocked section between the
④ and ③ 100 kPa ports ④ and ③
or more?
⇒ Repair as needed or replace LSV
NO
Is the
difference in
YES
Check for clogging in a dryer
⇒ Replace the dryer.
5° C or more?
NO
YES
Air is entering
⇒ ※Replace refrigerant.
NO
Is the
YES
HPT failure
⇒ Replace HPT.
or more?
NO
Note: ※Recover refrigerant
Gas shortage ⇒ ※Replace the refrigerant.
Remedy
when replacing it.