Samsung AM050KXMDEC - Comp. down Due to a Protective Control of High Pressure (Error Code: E407)

Troubleshooting
38 Samsung Electronics
3-7 Comp. down due to a protective control of high pressure
(Error Code : E407)
1. How to check
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
Test operation
Open the service valve
Replace a high pressure sensor
Check the relevant EEV
Check the piping
Yes
Yes
Yes
No
Are service valves open?
Connect S-net and Manifold gauge
(Mandatory)
No
No
No
Yes