Display Error Mode - Samsung AQV12NSAN Service Manual

4-2 Display Error and Check Method

4-2-1 Display Error mode

Error Mode
Outdoor LED
Indoor
7-Segment
Y G R
1min.Time out
no display Communicatiion
(Indoor detection)
Indoor
Temperature
no display Sensor
Error(OPEN/
SHORT)
Indoor Heat
Exchanger
no display Temperature
Sensor Error
(OPEN/SHORT)
Indoor Fan Motor
Speed Detecting
Error
no display (Occur when it
continues for 15
ssecond at below
450rpm)
no display EEPROM Error
MPI Feedback
no display
Error
Option is erased
All blink no display or wrong option
code is input
1min. Time out
Communication
(Outdooe detec-
tion)
Outdoor temp
sensor error
Coil temp sensor
error
Discharge temp
sensor error
Discharge over
temperature
Outdoor Fan error
4-4
Cauase Follow-up Measures
- Check the connector of indoor-outdoor cable
- Check the fuse
C - e h k c s a e s m i l b
connector on the indoor unit main PCB
- M a e u s e r h t r e s e
connector no. 1 and no. 2 (E121), no. 3 and no.
4 (E122) - by separating the sensor part's con-
nector
Temp. Resistance
(˚C) Valve(KΩ)
15 14.68
20 12.09
25 10.00
* If not meet the above DATA, replace sensors.
- Check assembling status of the Motor Hall IC
output connector (CN44) on the indoor unit
main PCB
- Check the assembly status of the
connector (CN6601)
- Change the
-Reset remote-control option code
- Check the connector of indoor-outdoor cable
- Check the fuse
- Check the assembling statue of sensor parts
on the outdoor PCB
E221 : CN54 PIN#1,#2
E237 : CN54 PIN#5,#6
E251 : CN54 PIN#3,#4
- Check the assembling statue of sensor parts
on the outdoor PCB CN54 PIN#3,#4
- Check the fan was locked.
- Check the assembling status of Fan
connector(CN01) the outdoor PCB
- Check the wire color of fan connector
g n s t a t s u f o h t s e n e o s p r r a s ' t
t s i n a e c v l a e u n o o b h t s d i s e
Temp. Resistance
Others
(˚C) Valve(KΩ)
30 8.31
The error
35 6.94 of DATA is
±2%.
40 5.83
operation
Outdoor Indoor
Comp. MPI
Fan Fan
OFF OFF OFF Continue
OFF OFF OFF Continue
OFF OFF OFF Continue
OFF OFF OFF OFF
OFF OFF OFF OFF
Continue Continue Continue OFF
OFF OFF OFF OFF
OFF OFF OFF Continue
OFF OFF OFF Continue
OFF OFF OFF Continue
OFF OFF OFF Continue
OFF OFF OFF Continue
When it occur first, it shows
Error.
Continue
After 10 minutes, it can be
operating.
Samsung Electronics
Trouble
Shooting
4-3-1
4-3-2
4-3-3
4-3-4
4-3-5
4-3-1
4-3-6
4-3-7
4-3-8
4-3-9
4-3-10