Advertisement
Poor cooling in Fresh food section
1
Check the sensor resistance.
CON6 R1SNR
5
th
pin ~ 6
th
pin
23ºF / -5ºC
32ºF / 0ºC
41ºF / 5ºC
50ºF / 10ºC
59ºF / 15ºC
Reset the unit and
2
Input Test1 Mode
(Push the button 1 time)
3
Open the fresh food door and
Check the air flow D amper?
Yes
CON7
Resistance [Ω]
38k
30k
24k
19.5k
16k
Check the
No
4 Check the air temperature.
Is it cold?
5
Check the Fan Motor voltage
Is Fan Motor voltage 10~12V?
TEST MODE 1
CON8
th
9
pin ~ 12
6 Check the Fan Motor voltage
Is Fan PWM voltage 2~4.5V ?
TEST MODE 1
dampe
r
CON8
Go to 5
th
9
pin ~ 19
7 Check the Fan Motor voltage
Is Fan Feed Back voltage 0V,5V ?
TEST MODE 1
CON8
th
9
pin ~ 10
8 Explain to customer
Yes
Go to 8
CON8
Voltage [V]
10~12 VDC
th
pin
Yes
CON8
Voltage [V]
2~4.5 VDC
th
pin
No
CON8
Voltage [V]
Not 0V, 5V
th
pin
No
Check the
Compressor
No
and sealed
system
Replace
No
Main PCB
Replace
No
Main PCB
Change the
Yes
motor
Advertisement
