Daikin SkyAir RZF-A Series, Service Manual

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Check SiME281906E
201 Part 6 Service Diagnosis
6.8 Clogged Points Check
CHECK 10
Temperature differences must occur before or after the clogged points.
(1)
(3) (3)
(5) (4)
Indoor unit Outdoor unit
(2)
COMP ACC
Check points Check factor Causes Remedies
1 Around expansion
mechanism
Temperature
difference
 Dust
 Choked moisture
 Reduced effective pipe diameter due
to adherent contamination, etc.
Replace the electronic expansion
valve.
2 Accumulator for
compressor
Frosting  Choked moisture Blow nitrogen gas, and then replace
the refrigerant.
3 Distributor Temperature
difference
 Dust
 Choked moisture
 Reduced effective pipe diameter due
to adherent contamination, etc.
Replace the heat exchanger or
distributor.
4 Field piping Temperature
difference
 Collapsed pipe Replace the pipe.
5 Stop valve Temperature
difference
 The stop valve is not fully open. Open the stop valve fully.