Samsung AC009BN1DCH, Руководство по обслуживанию, Страница: 264 / 330

Troubleshooting
4-70 Samsung Electronics
4-4-13. Pipe blockage error (Error Code : E422)
Yes
Yes
Yes
If there occurs E422 error, reset the power
and check in the following order.
Check whether the pipe is empty and open all
the service valves on the gas and liquid pipes..
Modify the piping and connect immediately
and then empty the pipes and open the service valves.
Check the replacement of the EEV (body/coil)
and the refrigerant leaking part. After that, recharge.
Check the temperature value through S-NET, etc.
and then if there is a fault, replace and reconnect.
No
No
No
No
Is outdoor unit service valve opened?
Is connection of piping suitable?
(Check the disconnection, bent, or cross-
connection with other sets.)
Does operation error of
refrigerant leakage or EEV appear?
Is it defect of indoor machine EVA
sensor and connection state?
Display
Outdoor Unit display E422
Wired remote Control, Wind Free RAC E422
Duct, 1way Cassette
4way Cassette,
4way Cassette(600x600)
MAX4 Console 360 Cassette
or or
or
BLUE ◑
Duct
Blue Red
1way
Blue Yellow
◑
X X
◑ ◑ ◑
X
◑ ◑
●
◑ ◑ ◑ ◑
X X
◑
Judgment
method
Refer to checking method, as shown below.
Symtom