Service Manual -
DVC 09/12/18/24 SF Series
38
43
8.2.6 Refrigerant Leakage Detection diagnosis and solution
(EC)
Error Code
EC
Malfunction conditions
Define the evaporator coil temp.T2 of the compressor just starts
running as Tcool.
In the beginning 5 minutes after the compressor starts up, if T2
<
Tcool
-
2
°C (
Tcool
-
35.6
°F)
does not
remain
continuous 4
seconds and this situation happens 3 times, the display area will
show “EC” and AC will turn off.
Possible
causes
●
T2 sensor faulty
●
Indoor PCB faulty
●
System problems, such as leakage or blocking.
Troubleshooting:
Is there cool air blowing
out from indoor air outlet?
Yes
Yes
Check T2 sensor
connection
.
Correct the installation or
replace T2 sensor. Does the
problem remain?
No
Is there any leakage? Especially
the connection parts, such as the
gas valve and the liquid valve.
No
Shut off the power supply and
turn it on
2 minutes
later. Is it
still displaying the error code?
Replace indoor PCB.
Yes
Repair the leak and
recharge the refrigerant.
Yes
Clear the block
age
.
Yes
Is there any block
age
? (Such as the
capillary or the welded points of the pipes.)
Summary of Contents for A-DVC09SF-0
Page 8: ...Service Manual DVC 09 12 18 24 SF Series 8 6 For B DVC09SF 0 For B DVC12SF 0 For B DVC18SF 1 ...
Page 9: ...Service Manual DVC 09 12 18 24 SF Series 9 7 For B DVC24SF 1 ...
Page 13: ...Service Manual DVC 09 12 18 24 SF Series 13 For A DVC24SF 1 ...
Page 14: ...Service Manual DVC 09 12 18 24 SF Series 14 4 Refrigerant Cycle Diagram ...
Page 42: ...Service Manual DVC 09 12 18 24 SF Series 42 47 P W N U ...
Page 43: ...Service Manual DVC 09 12 18 24 SF Series 43 48 N V N W ...
Page 55: ...Service Manual DVC 09 12 18 24 SF Series 55 This page intentionally left blank ...