Samsung AQ07P8GE Training Manual - page 89
88 | SAMSUNG
8
TROUBLESHOOTING
Troubleshooting for Non Inverter Cooling Only
(12K)
(Cont.)
◆
When the Outdoor Unit Does Not Operate. (Initial Diagnosis)
1) Checklist :
(1) Is input voltage normal?
(2) Is the set temperature of the remote control higher than room temperature in COOL mode?
(3) Is the POWER IN connector (CN71) linked correctly?
(4) Is the outdoor unit properly connected with the TERMINAL BLOCK connector(N(1), 1)?
2) Troubleshooting procedure
After unplugging out the power cord should be
reconnected within five seconds.
Does the OPERATION lamp blink
YES
YES
NO
NO
NO
#
#
@
@
!
NO
YES
NO
YES
Outdoor unit is
out of order.
Power relay is
out of order
Power relay should be
replaced.
PCB should be
checked.
Microcomputer is
out of order.
Room temperature sensor
is out of order
PCB Should be
checked.
Check as in the procedure "No Power parts"
YES
Is the room sensor normal register?
10°C
20°C
30°C
17.96k
Ω
12.09k
Ω
8.3k
Ω
Does the timer lamp blink during operation ?
Is the power relay RY71 operated by adjusting the
room temperature?
Is rating Voltage ±10% range applied relay between
Terminal block No. N(1) and No. 1
Test rod location
Normal
+
-
Condition
Voltage
IC04 Pin No.38
GND
RY71 ON
DC 4.8V
DB98_08187A(1)_57~100 3/27/03 2:24 PM Page 88