Comp. Down Due To A Protective Control Of High Pressure - Samsung AM040KXMDEH/EU Service Manual

4-3-7 Comp. down due to a protective control of high pressure (Error Code : E407)
1. How to check
Are service valves open?
Do the values of S-net and
Manifold gauge correspond?
Does indoor/outdoor EEV
Is there any clogged place
in the piping (ex. filter)?
Check the amount of refrigerant
Samsung Electronics
Test operation
Yes
Yes
operate well?
Yes
No
Connect S-net and Manifold gauge
(Mandatory)
No
Open the service valve
No
Replace high pressure sensor
No
Check the relevant EEV
Yes
Check the piping
Troubleshooting
29