Samsung AD18A1(B1)E09, Service Manual

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5-4
Samsung Electronics
Troubleshooting
4. Check the test operation status by pressing the PCB switch
S / W- A and S/W-B of outdoor unit.
• Check the operation status by pushing the switch one at time.
• Perform the test operation only for the unit selected last.
• Check the pipe pre s s u re and the other operation status
during the test operation.
• Check items when the error occurs during the test operation
(each unit)
- Check there is enough re f r i g e r a n t .
- Check pipe connections.
E
E
X
X
A
A
M
M
P
P
L
L
E
E
• In case of unit A test, push once the PCB switch S/W- A ( s a m e
for unit B).
- In such a case, the indoor unit of unit A is operated
automatically by the outdoor unit.
- In case the unit A test stops, push once more the switch
S / W- A .
< Operation >
1. Once the test is started, the COMP is on and Good (displayed
Gd) or Error (displayed Er) is displayed after 4 minutes .
: Taking diff e rence between the present temperature of
indoor heat exchanger and the temperature 4 minutes later,
if the temperature diff e rence is over 5°C, the connection is
good or if the temperature diff e rence is below 5°C, the
connection is bad.
2. If the result of the test operation is good operation, is
possible for 30 minutes max.
If there is an erro r, the outdoor unit shall be stopped
i m m e d i a t e l y.
If an error occurs, push switch S/W- A or S/W-B once to
resume from the error status. Restart is then possible.
3. Once the test operation is completed, push switch S/W- A o r
S / W-B to finish the test.
4. Once the test is completed, operate the indoor unit normally.
5. Check the operation is normal. Start up is over.
OUTDOOR UNIT
a : PCB display
b : Red LED
c : PCB switch