Troubleshooting by Remote Controller
SiUS281117
Service Diagnosis
181
Clogged Points
Temperature differences must occur before or after the clogged points!
CHECK 8
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
Frosting
Choked moisture
Blow a 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.
ACC
Indoor Unit
Outdoor Unit
COMP
1
2
3
3
4
5
