Samsung Electronics
Troubleshooting
11-28
11-2-23 The 1
st
, 2
st
error of indoor EEV closing
Outdoor unit display
Indoor unit display
Judgment method
Causes
1
st
detection :
2
nd
detection :
1. Judgment method(Start the detection 5 minutes after the completion of safe start.
Every condition below should be satisfied 20 minutes over.)
1) In cooling mode (Every condition below should be satisfied 20 minutes over.)
2) In main cooling mode (Every condition below should be satisfied 20 minutes over.)
3) In heating mode (Every condition below should be satisfied 20 minutes over.)
Tcond, out - Tair, out
≥
3˚C
Tair, in - Teva, in
≥
4˚C
Tair, in - Teva, out
≥
4˚C
Compressor running &
indoor unit on and thermo on
OK
NO
NO
OK
Tcond, out - Tair, out
≥
2˚C
Tair, in - Teva, in
≥
4˚C
Tair, in - Teva, out
≥
4˚C
Compressor running &
indoor unit on and thermo on
Liquid Bypass switches ON because of the raise of
compressor discharge temperature.
T
MCU Temp.
> 50˚C
Teva, in - Tair, in
≥
3˚C
Teva, out - Tair, in
≥
2˚C
Average of high pressure > 15kg/cm
2
Average of low pressure < 5kg/cm
2
Heating Indoor unit
OK
OK
OK
Not related
NO
NO
OK
OK
Cooling Indoor unit
OK
NO
NO
OK
OK
✳
Only for H Type outdoor unit
Detection condition
More than 2 indoor unit's are thermo on running for heating mode.
The average value of high pressure is 18kg/cm
2
over.
Indoor unit T (EVA_IN) < T(room) +3˚C
T (EVA_out) < T(room) +3˚C
24103A(1)_2 12/23/05 12:57 PM Page 6-85
Summary of Contents for AVMKH020EA4
Page 114: ...MEMO 5 12 Samsung Electronics...
Page 124: ...MEMO 5 22 Samsung Electronics...
Page 130: ...MEMO 5 28 Samsung Electronics...
Page 134: ...MEMO 5 32 Samsung Electronics...
Page 178: ...MEMO 9 14 Samsung Electronics...
Page 269: ...MEMO Samsung Electronics 13 21...