Daikin SkyAir RZR-P Series Service Manual page 188

Troubleshooting by Remote Controller
CHECK 8
Clogged Points
Temperature differences must occur before or after the clogged points!
Check points
1
2
3
4
5
Service Diagnosis
3
Indoor Unit
Check factor
Around Temperature
expansion difference
mechanism
Accumulator Frosting
Distributor Temperature
difference
Field piping Temperature
difference
Stop valve Temperature
difference
1
4 5
2
ACC COMP
Outdoor Unit
Causes
 Dust
 Choked moisture
 Reduced effective pipe
diameter due to adherent
contamination, etc.
 Choked moisture
 Dust
 Choked moisture
 Reduced effective pipe
diameter due to adherent
contamination, etc.
 Collapsed pipe
 The stop valve is not fully
open.
SiUS281117
3
Remedies
Replace the electronic
expansion valve.
Blow a nitrogen gas,
and then replace the
refrigerant.
Replace the heat
exchanger or
distributor.
Replace the pipe.
Open the stop valve
fully.
181