Comp. Down Due To Compression Rate Control - Samsung AVXCSH023/032/040CE Service Manual

Troubleshooting
4-3-44

: Comp. Down due to compression rate control

Outdoor unit display
(Operation)
Indoor unit display
Criteria • The ratio of (high pressure +1)/(low pressure +1) is over 8.5 for more than 10 minutes
Cause of problem • Indoor/outdoor EEV breakdown and clogged piping / Defective high/low pressure sensor
1. How to check
Test operation
Are service valves open?
Do the values of S-net and
Manifold gauge correspond?
Does indoor/outdoor EEV
operate well?
Is there any clogged place
in the piping (ex. filter)?
Check the amount of refrigerant
4-82
(Timer) (Fan) (Filter)
Yes
Yes
Yes
No
(Defrost)
Connect S-net and Manifold gauge
(imperative)
No
Open the service valve
No
Replace a low pressure sensor
No
Check the relevant EEV
Yes
Check the piping
Samsung Electronics